The Cruelty of Gix gets you your Rush of Dread and next turn reanimates your bloodletter and you have mana open to kill the opponent! Will 100% make a deck around this
Kellan, the Kid triggers on Jodah's trigger that casts a card from exile. Kellan's trigger lets you cast from your hand for free, which will re-trigger Jodah if the spell from your hand is legendary. A lot has to line up, obviously, and the Jodah trigger is random and ensures that the mana value decreases with each loop (if you can somehow also draw a bunch of cards to keep it going more than once), but still cool. Also, casting Kellan can't start the loop, since he would still be on the stack when the Jodah trigger resolves, but if you resolve a Jodah trigger with Kellan in play, cool stuff can happen.
Or play B/G, turn 3 Topiary Stomper for ramp and removal bait and don't cast Bloodletter until you have 6 mana and a protect spell, same as Fight Rigging decks.
Insatiable Avarice with Sheodred on the board does 11 damage. 3. +6 (draw 3 cards) + 2 (draw step). Might be worth doing. Obviously as a finisher because giving card advantage to your oppo and not finishing them may bite you back. 😅
With Tamiyo you’re somewhat limited by the casting cost, so maybe Dusk Rose Reliquary or Tithing Blade (if you can get it in your yard) would be a solid card to get one to copy over and over
Im surprised no one thought about rakdos joins in the jodah. Like how do they deal with your board. If you have a sac outlet you can just swing in as much as you want then burn them out afterwards.