Mirkwood Bats is your go-to round-the-table life loss card as youll always be making Blood tokens for your sacrifice outlet
This dragon hydra costs X and one Red mana, and enters with X +1/+1 counters on it
Innistrad, with its themes of transformation, hunger, and release from constraint, turned out to be the perfect home
Sure, its controller gains life equal to its power, but that's a very small price to pay to ensure you don't lose the game - and one-mana instant speed removal for any target will stop you from losing the game
(Choose any number of permanents and/or players, then give each another counter of each kind already there.) A conductor for an electric symphony
Whenever an Equipment you control enters, you may attach it to target creature you control