mtg cards like aetherize | Crucible of War (Unlimited) Aetherize x1 NM Gatecrash MTG

Artifact creatures still count as artifacts, but have power and toughness like regular creatures, and can block and attack as such

Necron Dynasties Commander Deck Grind your opponents into dust

Magic the Gathering's creators made the card incredibly rare to counteract its strength

You may also have additional incentives to play it like Elvish Refueler

From the Final Fantasy set, Summon: Leviathan is a massive Saga creature

As stated above, if you have a multicolored deck that has green in it, my tip is to lean your manabase more towards green and use some of the spells found in The Best Green Ramp Spells guide to fix your colors