search your deck for a card mtg Demonic Bargain – Crimson Vow of the Day and put it into your hand ≫ MTG Foresight decks and

If you can keep a steady supply of cards in hand, you can answer almost anything your opponent can throw at you

some assemble powerful combinations of cards that are hard for their opponents to overcome

Either way, Hyldas doing some work while you're tapping your opponents creatures, and just making a 4/4 elemental creature each time already goes a long way

For just six mana (three generic, two black, and one green) you get 18 power

Wizard of the Coast, the company responsible for designing and printing MTG, have been experimenting with more complex ward costs (like Saruman of Many Colors), so its likely theyll keep exploring this mechanic further in future sets