Whenever this creature or another Ally you control enters, you may put a +1/+1 counter on each Ally creature you control.

: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.
: Target artifact creature gains deathtouch and lifelink until end of turn.

Flash
Enchant creature you control
Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost." (You may cast that card from your graveyard for its flashback cost. Then exile it.)

This creature can't block.
When this creature dies, create X 1/1 black Rat creature tokens with "This token can't block," where X is the amount of damage dealt to it this turn.

This land enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from this land: Add one mana of any color.

This land enters tapped.
: Add or .
: This land becomes a 3/4 red and green Dinosaur creature until end of turn. It's still a land.
Whenever this land attacks, another target attacking creature gets +2/+0 until end of turn. Untap that creature.

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
: Add or .

When this creature enters, you may have target opponent sacrifice a creature of their choice.

You may have this land enter tapped as a copy of any land card in a graveyard, except it's a Cave in addition to its other types.
: Add .

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

Destroy target creature. If a creature card is put into a graveyard this way, return it to the battlefield under your control. Sacrifice it at the beginning of your next end step.

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.)
Create a token that's a copy of target permanent you control.

Flying
When this creature enters, you lose 5 life.

Menace
Whenever this creature enters or transforms into Grub, Storied Matriarch, return up to one target Goblin card from your graveyard to your hand.
At the beginning of your first main phase, you may pay . If you do, transform Grub.

Each Sliver card in each player's hand has slivercycling .
Slivercycling (, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

Destroy all creatures. Each player loses life equal to the number of creatures they controlled that were destroyed this way.

Kicker
When Jace enters, if Jace was kicked, create a token that's a copy of Jace, except it's not legendary and its starting loyalty is 1.
+1: Scry 2.
0: Draw a card and reveal it. Remove a number of loyalty counters equal to that card's mana value from Jace.

Each creature you control assigns combat damage equal to its toughness rather than its power.
−3: You gain life equal to the greatest toughness among creatures you control.

: Add .
: Add or . This land deals 1 damage to you.

When this artifact enters or is put into a graveyard from the battlefield, draw a card.