Torrential Gearhulk Issues

[nimble mauve]

https://scryfall.com/card/cmm/128/torrential-gearhulk

Torrential Gearhulk <:mana4:292901508712890379><:manau:292901508754702338><:manau:292901508754702338>

Artifact Creature — Construct
Flash
When this creature enters, you may cast target instant card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.
5/6

https://scryfall.com/card/2x2/57/mana-drain

Mana Drain <:manau:292901508754702338><:manau:292901508754702338>

Instant
Counter target spell. At the beginning of your next main phase, add an amount of equal to that spell's mana value.
Enthusiasm is no match for preparation.