Grim HirelingWhenever one or more creatures you control deal combat damage to a player, create two Treasure tokens. , Sacrifice X Treasures: Target creature gets X X until end of turn. Activate only as a sorcery.

where X is Esper Sentinel's power

choose target creature you control

you may exile a blue card from your hand rather than pay this spell's mana cost

then shuffle and put that card on top

then return that card to the battlefield under its owner's control

Whenever you cast a white spell

Exile target creature

creatures you control gain trample and get +X/+X until end of turn

• Creatures you control gain flying

Return target nonland permanent you don't control to its owner's hand

Do this only once each turn

you may cast this spell without paying its mana cost