Hamstersaurus Rex

Hamstersaurus Rex comes into play
with {x} heart tokens on it.
Remove {x} heart tokens: deal {x} damage to target creature and put {x} +1/+1 counter on Hamstersaurus Rex. If a creature is killed from
this damage put {x} 1/1 Squirrel tokens into play.
Any time Hamstersaurus Rex attacks it heals the opposing player for twice the damage it would
have normally dealt (after all modifiers).