Some even have effects while there
While bouncing a card doesn't sound like much of a threat, controllers can always combine it with mill mechanics
You can only use this effect of "Return of the Monarchs" once per turn
If this card is Normal or Special Summoned: You can add 1 "Volcanic" card from your Deck to your hand, except "Volcanic Trooper" or "Volcanic Eruption"
P/T Number 60 Language English Legal Formats Commander, Historic, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Modern, Pauper, Pioneer, Standard, Timeless Rulings (6/6/2025) "Commander ninjutsu [cost]" means "[Cost], Reveal this card from your hand or from the command zone, Return an unblocked attacking creature you control to its owner's hand: Put this card onto the battlefield tapped and attacking." (6/6/2025) Commander ninjutsu is a variant of ninjutsu that can be activated from the command zone as well as from your hand
Thank goodness Chocobos in FFXIV Mobile are modernized