FlyingWhenever an opponent draws a card except the first one they draw in each of their draw steps, create a 1/1 green Snake creature token.Whenever Xyris, the Writhing Storm deals combat damage to a player, you and that player each draw that many cards.
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and no matter when it came under your control.)Equip (: Attach to target creature you control. Equip only as a sorcery.)
Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)TrampleWhenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.
Deathtouch: Add two mana of any one color.Whenever you cast a spell with in its mana cost, create a 0/0 green Hydra creature token, then put X +1/+1 counters on it.
Vigilance, hasteKelsien, the Plague gets +1/+1 for each experience counter you have.: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.
Partner with Haldan, Avid ArcanistHasteWhenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.
FlyingWhenever an opponent draws a card except the first one they draw in each of their draw steps, create a 1/1 green Snake creature token.Whenever Xyris, the Writhing Storm deals combat damage to a player, you and that player each draw that many cards.
Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)TrampleWhenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.
Manascape Refractor enters tapped.Manascape Refractor has all activated abilities of all lands on the battlefield.You may spend mana as though it were mana of any color to pay the activation costs of Manascape Refractor's abilities.
Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)Spinerock Knoll enters tapped.: Add ., : You may play the exiled card without paying its mana cost if an opponent was dealt 7 or more damage this turn.
When Thalia's Lieutenant enters, put a +1/+1 counter on each other Human you control.Whenever another Human you control enters, put a +1/+1 counter on Thalia's Lieutenant.
Vastwood Hydra enters with X +1/+1 counters on it.When Vastwood Hydra dies, you may distribute a number of +1/+1 counters equal to the number of +1/+1 counters on Vastwood Hydra among any number of creatures you control.
Deathtouch: Add two mana of any one color.Whenever you cast a spell with in its mana cost, create a 0/0 green Hydra creature token, then put X +1/+1 counters on it.
Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)FlyingWhenever this creature mutates, gain control of target noncreature artifact.
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)Destroy target artifact or enchantment.
Capricopian enters with X +1/+1 counters on it.: Put a +1/+1 counter on Capricopian, then you may reselect which player Capricopian is attacking. Only the player Capricopian is attacking may activate this ability and only during the declare attackers step. (It can't attack its controller.)