Driz, The Ashen Frost

Hexproof (Alt for Driz, Ign Floe)
The first instant or sorcery spell you cast each
turn costs {3} less to cast.
Whenever Driz, The Ashen Frost enters the battlefield under your control, you may pay {r}{r}{r}. If you do, deal 3 damage to each other
player and permanent you don't control. Tap
them. They don't untap in their next untap
phase.