Weirdheart Hydra

Tribute X (As this creature enters the battlefield, an
opponent of your choice may place X +1/+1 counters
on it.)
When Weirdheart Hydra enters the battlefield, if
tribute wasn't paid, you may cast an instant or
sorcery spell from your hand without paying its
mana cost.
When Weirdheart Hydra dies create a blue Weird
creature token with flying whose power and
toughness are equal to Weirdheart Hydra's
power.