Envoy Min

First Strike, Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
If this card's entire colourless mana cost is paid
for by Envoy Min's Delve ability, all Sentinel
creaturesyou control get +1/+1 and gain
deathtouch until end of turn.
"Honestly, this is just getting paid for cracking heads." - Envoy Min