And then your payoff, because you can't double up on questing with those characters, is frankly pretty lackluster
The Convoke ability makes it sometimes free, which increases the odds that you'll be able to play this, plus your own boardwipe, in the same turn
If that card is a land, this process starts up again, so you can play multiple copies of a same card even if this card only triggers once, depending on your graveyard
Im not saying the card is completely unplayable, but a card better win you the game if youre spending 8 mana on it, which this is really far from doing
Its definitely worse than either, even with the ability to tap without damaging you, but that just gives budget EDH decks a new tool to improve their mana bases
It doesnt matter if you search up an artifact that is too expensive for this card to retrieve from the graveyard, because there are plenty of other effects that can help get it back in your hand or cheat it out