At the beginning of your upkeep, if there are four or more creatures on the battlefield, sacrifice Planar Collapse and destroy all creatures. They can't be regenerated.
Other blue creatures you control get +1/+1.: Target artifact creature becomes blue until end of turn.Tap an untapped blue creature you control: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts.
Path of Ancestry enters tapped.: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Target creature you control deals damage equal to its power to target creature you don't control. If the creature you control has trample, excess damage is dealt to that creature's controller instead.
TrampleJokulmorder enters tapped.When Jokulmorder enters, sacrifice it unless you sacrifice five lands.Jokulmorder doesn't untap during your untap step.Whenever you play an Island, you may untap Jokulmorder.
When Llawan, Cephalid Empress enters, return all blue creatures your opponents control to their owners' hands.Your opponents can't cast blue creature spells.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
At the beginning of your upkeep, Plague Spitter deals 1 damage to each creature and each player.When Plague Spitter dies, it deals 1 damage to each creature and each player.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)Counter target spell unless its controller pays .
Whenever you win a coin flip, create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color."), , Sacrifice another permanent: Flip a coin.
Defender (This creature can't attack.)Whenever Hornet Nest is dealt damage, create that many 1/1 green Insect creature tokens with flying and deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)
MenaceWhen Ruin Grinder dies, each player may discard their hand and draw seven cards.Mountaincycling (, Discard this card: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.)
As Alpine Moon enters, choose a nonbasic land card name.Lands your opponents control with the chosen name lose all land types and abilities, and they gain ": Add one mana of any color."
As Kindred Boon enters, choose a creature type.: Put a divinity counter on target creature you control of the chosen type.Each creature you control with a divinity counter on it has indestructible.
Whenever a nontoken creature you control dies, put a slime counter on Gutter Grime, then create a green Ooze creature token with "This creature's power and toughness are each equal to the number of slime counters on Gutter Grime."
