You typically find this blue artifact in decks trying to polymorph tokens into Eldrazi, but it can be useful against your opponents creaturesjust make sure you save it for the biggest threats so you dont accidentally turn a Birds of Paradise into an Old Gnawbone
The trippy part about this card is the Mine Excavation riff
Its versatility, especially with how well it lines up Unholy Annex, makes it such an auto-include into any Green strategy, regardless of if you're stompy or midrange
It costing ten mana can be looked at as an upside actually as here are some of the dumb spells you can cheat into play, like Maelstrom Wanderer, Call Forth the Tempest, Emergent Ultimatum, Eerie Ultimatum, and Last March of the Ents
Labyrinth Champion So this guy is a champion in escaping from Labyrinths
it could be a general reanimator commander as this is an extremely cheap, repeatable reanimation spell and cards like Valgavoth, Terror Eater are worth three random rats, but it begs the question: Where are the rats coming from