Yet City of Shadows is worth three times as much, because it falls near the center of my Venn diagram
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
Then, if Shredder has dealt combat damage to a player, they lose half of their health, rounded up
Bloodforged Battle-Axe increases our power the more combat phases it gets through by making more copies of itself
How many lands am I playing
This means youre probably gonna be casting it only a couple of times each game, but the card itself is designed to make each of those plays worthwhile