Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures, where X is the number of enchantments you control.
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.
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.
FlyingWhenever an opponent casts a spell, put a +1/+1 counter on Ishai, Ojutai Dragonspeaker.Partner (You can have two commanders if both have partner.)
Creatures with power less than Champion of Lambholt's power can't block creatures you control.Whenever another creature you control enters, put a +1/+1 counter on Champion of Lambholt.
Equipped creature gets +1/+1 for each color among permanents you control.As long as Conqueror's Flail is attached to a creature, your opponents can't cast spells during your turn.Equip
Each player discards their hand, then draws seven cards.Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)
Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher the Fierce deals damage equal to that spell's mana value to that player or a planeswalker that player controls.Partner (You can have two commanders if both have partner.)
Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.You draw a card at the beginning of the next turn's upkeep.
DeathtouchWhenever Silas Renn, Seeker Adept deals combat damage to a player, choose target artifact card in your graveyard. You may cast that card this turn.Partner (You can have two commanders if both have partner.)
First strikeAt the beginning of each opponent's end step, that player creates a 1/1 red Goblin creature token with "Creatures you control attack each combat if able."
Devour 2 (As this enters, you may sacrifice any number of creatures. This creature enters with twice that many +1/+1 counters on it.)At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on Mycoloth.
At the beginning of your upkeep, you gain X life and draw X cards, where X is the number of permanents you own that your opponents control.: Target opponent gains control of target permanent you control.
Equipped creature gets +4/+0., Unattach Sunforger: Search your library for a red or white instant card with mana value 4 or less and cast that card without paying its mana cost. Then shuffle.Equip
MenaceWhenever a creature you control deals combat damage to a player, you gain life equal to that creature's toughness.Partner (You can have two commanders if both have partner.)
Untap all creatures you control and all creatures target opponent controls. You and that opponent each gain control of all creatures the other controls until end of turn. Those creatures gain haste until end of turn.
