Pegasus, Guardian of Dreams

Flying, flash, hexproof

Enchantment spells you cast cost {1} less to play.

Whenever Pegasus, Guardian of Dreams attacks, you may choose another target creature you control. That creature gains hexproof until end of turn.

{w/u}{1}, Sacrifice a creature you control: Prevent all damage that would be dealt to target creature this turn.

"I will protect your hopes and dreams."