Flusterstorm (Buy-A-Box) [Modern Horizons] Darksteel Set: Dominaria Type: Legendary Artifact

Set: Dominaria Type: Legendary Artifact Rarity: Mythic Cost: {0} {T}: Add one mana of any color among legendary creatures and planeswalkers you control

Will Kenrith can be your commander

There are medicines for all afflictions but idleness

then put all cards exiled with Knowledge Vault into their owner's hand

and blue and white

Flusterstorm (Buy-A-Box) [Modern Horizons] Darksteel Set: Dominaria Type: Legendary ArtifactSet: Modern Horizons Type: Instant Rarity: Rare Cost: {U} Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)