mtg eldrazi booster box deck build with Collector pack Since its a large 248 card set (228 cards plus 20 basic lands) Magic: The Gathering Modern Horizons

It's pretty easy to cast noncreature spells in this deck, and it really doesn't matter what they are if we're also getting a copy of our best creature in the process

Once Sephiroth flips, which is easy to achieve with an Accursed Marauder or any kind of Grave Pact effect, the Blood Artist effect becomes permanent, and you get access to a terrifying 5/5 Flier that can draw you several cards a turn

Ultima's last ability is a triggered mana ability

We correctly identified that these decks were weak against Cori-Steel Cutter and Stock Up out of Izzet, and also weak against the Omniscience combo

Remember, characters cant use abilities that require them to be exerted if it is their first turn on the board