Ursarraura, the guardian

Defender, deathtouch, lifelink
Ursarraura, the guardian can block any number
of creatures each combat.
Whenever a player attacks, Ursarraura deals
damage to that player equal to how many
creatures they attacked with.
Whenever a creature dies, put a +1/+1 counter
on Ursarraura.
{x}{t}: each other creature you control gets
+X/+X, and you lose X life.