mtg.wtf

{T}: Add one mana of any color.
{T}: Target land you control becomes a 3/3 Elemental creature with haste until end of turn. It's still a land. Activate only as a sorcery.

When this creature specializes, create a token that's a copy of a creature card exiled with this creature, except it's 3/3 and has flying and haste. Sacrifice it at the beginning of your next end step.

Put X +1/+1 counters on target creature you control. Then counter up to one target spell unless its controller pays mana equal to the greatest power among creatures you control.

Animate Chains — When Chain Devil enters the battlefield, each player sacrifices a nontoken creature.

Enchant creature
Enchanted creature gets +10/+10 and has trample and annihilator 2.

{1}{W}, {T}, Discard a card: Create two 1/1 white Citizen creature tokens.

Untap all white creatures you control.
Whenever a creature blocks this turn, it gets +0/+1 until end of turn.

{2}{G}: Savage Knuckleblade gets +2/+2 until end of turn. Activate only once each turn.
{2}{U}: Return Savage Knuckleblade to its owner's hand.
{R}: Savage Knuckleblade gains haste until end of turn.

Create three 2/2 white Samurai creature tokens with vigilance. Scry 3.

Whenever Scalestorm Summoner attacks, create a 3/1 red Dinosaur creature token if you control a creature with power 4 or greater.

When Forbidding Spirit enters the battlefield, until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays {2} for each of those creatures.

Activated abilities of creatures you control cost {X} less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana.
{4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn.

Create two 3/3 green Centaur enchantment creature tokens. If it's your turn, scry 2.

Flying, trample
Pay 2 life: Surveil 2.

Flying
{B}: Darklit Gargoyle gets +2/-1 until end of turn.

If Primeval Spawn would enter the battlefield and it wasn't cast or no mana was spent to cast it, exile it instead.
Vigilance, trample, lifelink
When Primeval Spawn leaves the battlefield, exile the top ten cards of your library. You may cast any number of spells with total mana value 10 or less from among them without paying their mana costs.

Put nine +1/+1 counters on target land you control. It becomes a legendary 0/0 Elemental creature with haste named Vitu-Ghazi. It's still a land.

Mutate {3}{R}
Reach
Whenever this creature mutates, you may discard a card. If you do, draw a card.

All Slivers have "{T}: Regenerate target Sliver."

{T}, Sacrifice an artifact: Add {R}{R}.

First strike
Whenever Syr Alin, the Lion's Claw attacks, other creatures you control get +1/+1 until end of turn.

If you would draw a card, you may skip that draw instead.

Flying
Tetravus enters the battlefield with three +1/+1 counters on it.
At the beginning of your upkeep, you may remove any number of +1/+1 counters from Tetravus. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and "This creature can't be enchanted."
At the beginning of your upkeep, you may exile any number of tokens created with Tetravus. If you do, put that many +1/+1 counters on Tetravus.

When Pin Collection enters the battlefield, you may put an ability sticker with ticket cost X or less on it without paying that sticker's ticket cost.
Equipped creature gets +1/+1 and has all abilities of ability stickers on Pin Collection.
Equip {2}

Whenever you roll a 5 or higher on a die, Steel Squirrel gets +X/+X until end of turn, where X is the result.
{6}: Roll a six-sided die.