Panther, Heart Stealer

Reach
When you cast a spell if you have casted 4 or more spells this turn make a treasure token
{1}:Panther deals 1 damage to a random creature.
If you have 7 or more treasures you gain control of that creature until end of turn,
this only triggers once each turn
am thou, thou art I... We can finally forge a contract... There you go... nothing can be solved by restraining yourself.
Understand? Then I'll gladly lend you my strength."