mtg cards with exalted Dragon Exodus 6/143 LP White Rare MAGIC THE GATHERING CARD then you may cast it from exile on a later turn.) FOIL] Exalted Angel - Onslaught

However, if you do, and that target is illegal as the ability tries to resolve, it won't resolve and none of its effects will happen

Others just happen to be goblins but will want to take your deck in a particular direction, like Zada, Hedron Grinder (pump spells) or Wort, the Raidmother (big spells)

Notably, to make Quintorius, History Chaser really work, youll need a way to remove cards from your graveyard

Unsettled Mariner makes it slightly more difficult for your opponents to remove your permanents, which is always helpful when your commander is a lightning rod

With the Simic running rampant in the set I had both (a) and (b)