Vladimir, Crimson Reaper

Lifelink
Once per turn, when you cast an instant or
sorcery spell, each opponent loses 2 life and you
gain 2 life. If this effect has resolved 4 turns in a
row, Vladimir deals 10 damage to each opponent.
Pay 5 life: Vladimir loses all abilities, has -5/-0,
and gains hexproof until end of turn.