Virtual World cards do this by banishing cards or sending them from the deck to the graveyard
Quachil Uttaus will outright kill the current first player each turn, unless you somehow prevent him from attacking
Lands that tap for multiple mana like Ancient Tomb can come back untapped to accelerate your big plays, permanents like Gilded Drake that you traded away to an opponent let you ensnare another big creature, or you can simply retake something stolen by an Agent of Treachery
Resealable with a tapered flap
However, this archetypes Fusion Monsters need a Dracotail monster and any monster in your hand, so Super Polymerization doesnt work with them
It hasn't been long since the game's release, but it's not exactly a surprise to see this mod arrive so quickly, given the natural connection between the two