the quintessential quintuplets specials premium booster box Gotoubun no Hanayome Premium Booster

Series Dark Black Knight Geyer of Yu-Gi-Oh Cards/Gust of Wind 1 This item has not been updated for more than 30 days and the seller has not logged in for a while

Yawgmoth, Thran Physician [Sacrifice Engine, Removal & Card Draw] Yawgmoth, Thran Physician turns creatures into cards, removal, and combo fuel

With Yusei's recommended parts in tow, the player returns to Crash Town

Apart from mutate cards to trigger that ability, I guess you could use Stuffy Doll and Brash Taunter, or fill your deck with cards that grant abilities to your commander like backgrounds and the legendary familiars (Kediss, Falthis, et al)

If The Indomitable is countered or dies after being cast from your graveyard, it returns to the graveyard