digimon metalseadramon card GigaSeadramon [BT20-028] (Alternate Art) [Release Special Booster Ver [On Play] Return up to 2 of your opponents level 4 or lower Digimon to their hand 1999 1st edition Digimon Metalseadramon

Next, these must be creatures not just a spell that has a cute creature in the art

Chart shows the price of Honest [Ghost Rare 1st Edition] LODT-EN001 at the end of each month going back as long as we have tracked the item.

All in all I see why you made those design choices, but I think that they are hard to balance, as a simple once per turn on all of the effects would probably work, but not help the deck

Volo #151 Pokemon Crown Zenith Keep track of your collection value over time

In fact, I would go so far as to say that it's likely one of the main adopters of Brightglass GearhulkBrightglass Gearhulk will be Soul SistersSoul Sisters decks that want to grab one of their various options to get their life gain engines going