Join forces — Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles.
Whenever a creature you control attacks, you may put a quest counter on Beastmaster Ascension.As long as Beastmaster Ascension has seven or more quest counters on it, creatures you control get +5/+5.
Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)Artifacts and creatures your opponents control enter tapped.
Whenever Bruse Tarl, Boorish Herder enters or attacks, target creature you control gains double strike and lifelink until end of turn.Partner (You can have two commanders if both have partner.)
Flying, trampleWhenever Hellkite Tyrant deals combat damage to a player, gain control of all artifacts that player controls.At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.
Undaunted (This spell costs less to cast for each opponent.)Exile two target creatures. For each of those creatures, its controller reveals cards from the top of their library until they reveal a creature card, puts that card onto the battlefield, then shuffles the rest into their library.