Jurrasic Destiny

Enchant creature
Enchanted creature gets +4/+4, has trample,
and "When this creature deals combat damage to
a player, you may have it deal 1 or 3 damage to
any target. If that target was a Dinosaur you
control, it deals 1 damage to target Dinosaur".
It's a Dinosaur in addition to its other types.
When enchanted creature dies, return
Jurrasic Destiny to its owner's hand