In the mid to late game, opponents will try to remove your creature, so wait until you have a Blossoming Defense or similar card in hand to get blowout card advantage
Arterial Alchemy is a card from the Crimson Vow Vampire preconstructed Commander deck that turns all tokens you control into equipment on top of their other types
A handful of creature types in Magic represent the no-longer-gone-but-not-forgotten warriors
Its also absolutely not worth noting that you can have Machine Gods Effigy come into play as a copy of Grand Architect and use the mana ability to turn it back into a blue creature for no reason whatsoever (edit: this doesnt actually work, sorry but it should ) At least this one doesnt go infinite with Devoted Druid, right
A set like Unstable is for casual games and released as fun, non-legal cards
After all, "punisher"-style effects that give your opponent a choice are usually underwhelming, as savvy opponents will always select the lesser of two evils