Through the Breach (Invocation) [Amonkhet Invocations] Core Set 2019 Prerelease Promos This is one of its

This is one of its dead ends

Nightmare Weaver

Whenever another creature enters the battlefield under your control

" —Toshiro Umezawa

Pay 2 life: Draw a card

Through the Breach (Invocation) [Amonkhet Invocations] Core Set 2019 Prerelease Promos This is one of itsSet: Amonkhet Invocations Type: Instant Arcane Rarity: Mythic Cost: {4}{R} You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice that creature at the beginning of the next end step. Splice onto Arcane {2}{R}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)