And since elf decks are packed with cheap mana-producers, your board fills out quickly, meaning that game-ending drain can come online sooner than your opponents expect
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
No Witnesses gives the player with the most creatures in play a Clue token, and then it destroys all creatures in play
Whatever the final number is, it's almost definitely the highest amount of money ever paid for a single MTG card.
First, there is the creature that survives combat, maybe one thats about to die due to an effect at end of turn or a creature that blocked that can be sacrificed to feed an engine
This commander plays much better if you use the mana reduction to make 2-3 mana interaction spells cost a single mana rather than getting a discount on bigger cards like Breach the Multiverse