The First Sliver [Modern Horizons] Kor Cleric Shaman then return a card from

then return a card from your graveyard to your hand for each card discarded this way

As Morophon

Goblins Type: Creature — Elf Druid Rarity: Uncommon Cost: {2}{G} When Elvish Harbinger enters the battlefield

Set: Invasion Type: Instant Rarity: Rare Cost: {U}{U}{B} Counter target spell

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {2} Spells cost {1} more to cast

The First Sliver [Modern Horizons] Kor Cleric Shaman then return a card fromSet: Modern Horizons Type: Legendary Creature Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Sliver spells you cast have cascade.