I was playing a Ninth Doctor (extra upkeeps) deck once and cloned a Magmatic Force, the Simic player tutored Craterhoof just to kill me before my next turn.
Ouch sadness. Yeah having a lot of magmatic forces is a lot of fun, but its not like it just ends the game. I think i eventually won the game where I had 6 but i got dismantled pretty hard, and didnt just focus life totals with the triggers
Thinking back I might have been combining two different games from that day. I now think the Craterhoof was actually when playing Master Multiplied and the two Magmatic Forces just got board wiped.
