DDR 

I definitely have lots of scenarios where I'm not sure how it works. For instance if I have a red devil token that says "deals one damage when it dies" and if they both die is two +1 +1 or none?

Yes

I believe based on 107.1b, the amount of life lost from reaper is calculated using the negative number, but if the result is negative it uses 0 instead. So if you're at -10 and attack with Reaper, it looks at half of -10 and says lose -5 life, but then the rules say you can't lose negative life and you lose 0 instead.

multiple triggers for hellrider, so same answer as grapeshot

Hell rider and Campaign of Vengeance have separate triggers for each attacking creature. Your opponent would only ever loose 1 life at a time. So Ob would trigger the same number of times as creatures you attacked with.

Ob Nixilis' opponent is the one with Belzenlok. The creatures are not on the same player's board.

Ah, of course! Was too focused on my side of the board. Thanks!

@@johanwingard9189 no problem! Have a great day

@@shanerphillips Same to you!

I agree that @Judging FtW kinda skipped over the whole damage translation into life loss here. From some of the discourse I saw this was the cause of confusion for some people and it helped clarify that Ob Nixilis is not triggering based on damage at all, just loss of life.

The reason multiple life linkers will cause Archangel of Thune to trigger multiple times is because there is a specific rule that says triggered abilities [CR 119.9] and replacement effects [CR 119.10] that look for a player to gain life are actually meant to be interpreted as looking for a source to gain that player life. This is mentioned in DDR#197 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yqxJQpQqmlA.html Because of this rule, all triggered abilities like Archangel of Thune are handled like the Ghyrson Starn example from this episode.

@miserepoignee9594 Ahhh after rereading it I see your point. I maybe the one misinterpreting things. Thanks

@@miserepoignee9594 I still think damage processing [CR 120.4] is relevant to Ob Nixilis, Captive Kingpin, though. Rakdos Charm is one damage event from multiple sources, so while it'll trigger Ghyrson Starn a bunch of times, it won't trigger Ob Nix because the damage doesn't become life loss until step three [CR 120.4c] when it's processed into its results. This is relevant because the math gets weird if some of the creatures on the battlefield have lifelink and/or infect

I have the same dude

Urza's Armor is a bit different, since it deals with incoming sources of damage, and not life loss. Each creature is a different source of damage, so the armor would reduce each by one. If you imagine a hypothetical Azru's Armor that instead says "if you would lose life, instead lose one less life", this would subtract one from the total instead of one from each source, since the life loss is taken all in one chunk. It's important to remember that "taking damage" and "losing life" are two meaningfully distinct events that are usually, but not always, related.

@@fieldrequired283 Thank you!

Reckless Fireweaver will create separate triggers for each artifact. It doesn't deal more than one damage at once

Syr Konrad creates a separate trigger for each creature, and therefore Ob Nixilis would get one counter for each creature. Syr Konrad doesn't deal more than one damage to each opponent at once

[L1] Re: Nykthos Paragon - yes, it will sum the total damage dealt by the Demon's activation and put that many counters on your team. Remember though, Paragon only triggers once each turn. Re: Spirit/Soul Link - same thing happens here, but since Spirit & Soul Link are triggered abilities you'll have to resolve their triggers first. With Soul Link, the Oracle wording has been updated to be two separate triggers, which means you'll want to resolve the "deals damage" trigger first to get the most value from Nykthos Paragon, and then you'll gain an additional life from the "is dealt damage" trigger but Paragon won't trigger again

In that case, in a game where you have three opponents, each activation of pestilence (for example) would trigger the ability three times instead of only once.

@@pallen2645 I.. think you're misunderstanding a bit. I changed the "one or more opponents" to "an opponent" because I'm pretty sure that has to be how it's formatted for damage, but the relevant change is the change from loss of life to damage. My more specific question is: Multiple creatures dealing one damage each to a player is considered one single event of life loss, but is it considered one single event of damage? My assumption is no, since a single dealing of damage cannot have multiple sources, but I'm not 100% sure.

​@@JuniperHatesTwitterlikeHandles Combat damage is dealt simultaneously, so all the damage is added together, and then that damage being dealt is what causes the loss of life. Unless you change Ob to specify the source of the damage like on Ghyrson Starn, he will just see one big amount of damage being dealt. Notably, changing it from life loss to damage to players is actually a strict nerf to the options Ob can work with. Damage causes loss of life, but life loss isn't always from damage.

The losing life is part of the process that is being repeated, so it would work like the Mana Clash example

No that's not right. Because Hellrider says "Whenever a creature you control attacks, Hellrider deals 1 damage to the player or planeswalker it's attacking." This will trigger separately for each attacking creature. If it was worded something like "whenever you attack, each attacking creature you control deals 1 damage to the player or planeswalker it's attacking" then you would get no triggers for attacking with 3 creatures

Each would trigger separately, since they are not part of the same effect from the same spell or permanent.

Ob doesn't care about damage, only loss of life, so it's irrelevant.

With the original example of a Rakdos Charm, Nick's five creatures will all damage him at once. Therefore, Ob Nix sees Nick lose 5 life, which doesn't match the trigger condition of "losing exactly one life", so Ob does not trigger.

Separate instances for each activation but trigger only once for each opponent, not three times

Extort is a triggered ability that causes all of your opponents to loose one life. In a multiplayer game, since this is all happening at the same time, you would only get one trigger. If you have multiple instances of extort, the multiple instances will all trigger separately. You would get one Ob trigger for each instance you pay for.

That would work because each draw triggers Kederekt a seperate time

And if there were also an Underworld dreams under your control in addition to the Parasite, Ob Nixilis would trigger 14 times off of a Wheel since each card drawn triggers 2 separate instances of 1 damage. Unless I’m mistaken?

yeah reading the card explains the card really doesnt apply here... infact its quite the opposite

It is due to rule 119.9. One of those fun examples where you have to look at the rules because the cards don't work exactly like they are printed. Because each lifelinker is a different source, that triggered ability triggers for each one. 119.9. Some triggered abilities are written, “Whenever [a player] gains life, . . . .” Such abilities are treated as though they are written, “Whenever a source causes [a player] to gain life, . . . .” If a player gains 0 life, no life gain event has occurred, and these abilities won’t trigger.

"Wait, that can't be-" [Checks ruling on Karlov] "INTERESTING" :P