Awesome Cyber Monday

[+1]: Cast a copy of one of the following cards chosen at random—Ignorant Bliss, Crack the Earth, Blazing Volley. [−3]: Cast a copy of one of the f...

Patient Turtle enters the battlefield with two +1/+1 counters on it if you didn't go first this game.

Double any effect that doubles. (It quadruples.)

Cards in the winning deck(s) of the latest Mythic Championship cost {1} more to cast.

Legacy — Before the game starts, choose a keyword or ability word and write it below. Spells with __________ you cast cost {1} less to cast.

Choose one — • Rampant Growth • Giant Growth • Regrowth

Create a 2/2 green Gorilla creature token. When a spell or ability an opponent controls causes you to discard Gorilla Tactics, create two 2/2 green...

At the beginning of your upkeep, create a Forest land token.

{1}{Z}: Put a +1/+2 counter on Experiment Five. ({Z} is paid with one mana from any source that could produce two or more colors of mana.)

Domesticated Mammoth enters the battlefield with a token copy of Pacifism attached to it.

Vigilance Aggressive (During your turn, there is an additional combat phase after the first, and only creatures with aggressive may attack during it.)

Shuffle your whammy deck, then reveal cards from the top of your whammy deck until you reveal an Island or choose to stop. Then, if no Islands were...

Create three 0/0 white Spirit creature tokens with flying.

All targeted spells and abilities cost {2} less and have their targets chosen randomly.

Until end of turn, cards you own that aren't on the battlefield lose all card types, costs, names, and abilities and become red sorceries named Mis...

Whenever Trial and Error is countered or fizzles, you may copy it and choose new targets for the copy. Trial and Error deals 3 damage to any target.

You may cast Throat Wolf during an opponent's combat phase. Firstest strike (This creature deals combat damage to creatures before creatures with f...

Trample Untapped creatures can't block. Tapped creatures can block.

Tasty (This creature can be attacked directly. If it is attacked, it can't block creatures that didn't attack it.)

{1}{U}: Exchange Red Herring from your hand with a permanent you control on the battlefield or a spell you control on the stack. If that permanent ...

Haste The stack is now first in, first out instead of last in, first out. (The first spell or ability on the stack is the first one to resolve.)

When Problematic Volcano enters the battlefield, it deals 4 damage to any target. Then, starting with you, each player assigns their creatures to t...

Return target creature card from your graveyard to your hand. Spellmorph {B} (You may cast this card face down as a 2/2 creature for {3}. Cast it a...

{3}, {T}: Until end of turn, you may play one basic Plains card from outside the game.