+cub (20)
Whenever Angelic Cub becomes the target of a spell or ability for the first time each turn, put a +1/+1 counter on it.
As long as Angelic Cub has three or more +1/+1 counters on it, it has flying.
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.)
Lifelink
Whenever this creature mutates, create two 1/1 white Cat creature tokens with lifelink.
, : This turn, when target creature you control attacks and isn't blocked, it assigns no combat damage this turn and you put a cube counter on Delif's Cube.
, Remove a cube counter from Delif's Cube: Regenerate target creature.
, : Double the amount of each type of unspent mana you have.
Sacrifice this creature: Destroy target enchantment.
Engulf — When Gelatinous Cube enters, exile target non-Ooze creature an opponent controls until Gelatinous Cube leaves the battlefield.
Dissolve — : Put target creature card with mana value X exiled with Gelatinous Cube into its owner's graveyard.
Exile target creature. That creature's controller creates a 3/3 green Frog Lizard creature token.
Look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
: Add one mana of any type that a land you control could produce. If Incubation Druid has a +1/+1 counter on it, add three mana of that type instead.
: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)
Incubation Sac enters with three oil counters on it.
, , Remove an oil counter from Incubation Sac: Create a 3/3 colorless Phyrexian Golem artifact creature token. Activate only as a sorcery.
Devoid (This card has no color.)
When Incubator Drone enters, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ."
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
, Return Krasis Incubation to its owner's hand: Put two +1/+1 counters on enchanted creature.
Whenever Longtusk Cub deals combat damage to a player, you get (two energy counters).
Pay : Put a +1/+1 counter on Longtusk Cub.
, , Sacrifice Myr Incubator: Search your library for any number of artifact cards, exile them, then create that many 1/1 colorless Myr artifact creature tokens. Then shuffle.
Mama's Coming — Whenever Owlbear Cub attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.
Vigilance
As long as Raksha Golden Cub is equipped, Cat creatures you control get +2/+2 and have double strike.
As long as Skyhunter Cub is equipped, it gets +1/+1 and has flying.
Trample
As Urza's Incubator enters, choose a creature type.
Creature spells of the chosen type cost less to cast.
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, 
: This turn, when target creature you control attacks and isn't blocked, it assigns no combat damage this turn and you put a cube counter on Delif's Cube., Remove a cube counter from Delif's Cube: Regenerate target creature.