mtg return target card from graveyard to hand Mystic Retrieval All cards will be carefully packed for safe transit Grim Harvest | Cards &

Usually Boomerang is only played in the absence of Time Elemental, or if space provides, in addition to Time Elemental

Honorable mentions A few more cards that deserve a slot depending on your build: Mirari's Wake doubles your mana and pumps your creatures

The best part of The First Sliver is that when you find a spell with cascade after casting a spell with cascade, that new cascade trigger will happen, giving you the chance to chain multiple cascade triggers with one creature

Cost reductions or additions still affect the alternative costs of a spell

Then, you need ways to trigger landfall constantly and at best even more than only once a turn