Kalesta, Voice of Darkness

Partner with Valia, Voice of Revival (When this creature enters the battlefield, you may have any
player search their library for a card named Valia,
Voice of Revival and put it into their hand, then
shuffle their library.)
Deathtouch
Spells you control gain delve. (Each card you exile from your graveyard while casting a card with delve pays
for {1})