Yes, it takes a lot of mana to cast, but you can also immediately generate an additional 15 mana after casting it
If those creatures have total power 8 or greater, convert Ultra Magnus
If you can't tell, sacrificing any kind of mana card permanently is extremely bad in this game, let alone one that gives you a minimal boost
To squeeze all of the value you can out of this big Dinosaur, flicker effects, like Deadeye NavigatorDeadeye Navigator, Essence FluxEssence Flux, and Ghostly FlickerGhostly Flicker, are great additions
Machinist's Arsenal Rarity: Rare TYPE: Artifact SUBTYPE: Equipment CMC: 5 Mana cost: USD: $0.91 EUR: 0.40 TIX: 0.02 EDHREC RANK: 5371 Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +2/+2 for each artifact you control and is an Artificer in addition to its other types