Doom Slayer, Enraged One

Whenever Guile, Sonic Soldier enters the battlefield
or attacks, put a charge counter on him or remove
one from him. When you remove a counter this way,
choose one -

•Doom Slayer deals 4 damage to any target.
•Doom Slayer gains lifelink and indestructible until
end of turn.

[Immard, the Stormcleaver]