Simba and Nala, Betrothed

Roar 4 (When this creature enters the battlefield, tap
target creature an opponent controls with power 4 or
less. That creature doesn't untap during it's
controller's untap step. )

Whenever a creature you don't control becomes
tapped during your turn, gain life equal to its power.

"I can't marry her, she's my friend." - Simba. "Yeah,
it'd be so weird." - Nala