If you choose not to exile it, or you can't exile it because the card has somehow left the graveyard before the ability resolves, the ability simply doesn't do anything as it resolves
How to Build a Commander Deck in MTG MTG Deck Types +20 Popular Deck Archetypes
And we all know FF7 Cid is the best Cid anyway
The Dwarf Cards As far as on-board tricks go, Dwarven Sea Clan isnt the worst
Nessian Wanderer, Sythis, Harvest's Hand, Courser of Kruphix, Mesa Enchantress, Satyr Enchanter, Setessan Champion, Verduran Enchantress, Eidolon of Blossoms, Narci, Fable Singer, Calix, Destiny's Hand, Enchantress's Presence, Love Song of Night and Day 12 card draw