MTG

Whenever another legendary permanent you control enters, put a +1/+1 counter on Yoshimaru. Partner (You can have two commanders if both have partner.)

[+2]: Ugin deals 3 damage to any target. [−X]: Exile each permanent with mana value X or less that's one or more colors. [−10]: You gain 7 life, dr...

Trample Landfall — Whenever a land you control enters, double Tifa Lockhart's power until end of turn.

Eminence — As long as The Ur-Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost {1} less to cast. Flying Whenev...

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without...

Exile target creature. Its controller gains life equal to its power.

When Sokka enters, discard up to two cards, then draw that many cards. Whenever you cast an artifact or Lesson spell, put a +1/+1 counter on Sokka.

{T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Sliver spell. {5}, {T}: Create a 1/1 colorless Sliver creature token. ...

[+2]: Creatures you control with flying get +1/+1 until end of turn. [−3]: Create a 4/4 white Angel creature token with flying and vigilance. [−6]:...

Flying Whenever this creature or another Dragon you control enters, it deals X damage to any target, where X is the number of Dragons you control. ...

First strike, menace, trample Partner (You can have two commanders if both have partner.)

Look at the top three cards of your library, then put them back in any order. You may shuffle. Draw a card.

Lightning Bolt deals 3 damage to any target.

When J. Jonah Jameson enters, suspect up to one target creature. (A suspected creature has menace and can't block.) Whenever a creature you control...

{T}: Add {W}.

{T}: Add one mana of any color in your commander's color identity.

Counter target spell.

Flying Whenever this Vehicle attacks, if you control a Time Lord, the next spell you cast this turn has cascade and you may planeswalk. Crew 2 (Tap...

You have no maximum hand size. {T}: Add {C}.

Flash You may cast sorcery spells as though they had flash. Whenever the Ring tempts you, if you chose a creature other than Gandalf as your Ring-b...

As long as this artifact is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cos...

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Draw three cards.

As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card, put that card onto the battlefield, then...

Target player loses 2 life and you gain 2 life. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose ne...