I will only come back to edit it in order to fix exploits or bugs
Terastodon, Woodfall Primus, and Primeval Titan are probably the best cards for the "big green creature" role, but Simic Sky Swallower and Broodmate Dragon can serve the role as well, although they require greater deck manipulation to be able to hard cast should you draw either of them before finding your Natural Order
This lets you dig for the halves of Brisela, or get Linvala to stop shenanigans, or get Lyra for lifelink
While most boosters will have more Western high fantasy art styles available, Japanese boosters - and Collector Boosters worldwide - will have a second Mystical Archive aesthetic available, this time in a more traditional Japanese art style
Sometimes paired with evasion, a creature gets a bonus for a spell being cast, usually to its power