MTG

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

Woman Who Walked the Earth — When Martha Jones enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a ...

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

Negative — As long as K-9 is untapped, other legendary creatures you control have ward {1}. Affirmative — {1}{U}, {T}: Target legendary creature ca...

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

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Water Always Wins — Whenever this creature attacks, put...

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

You may have this creature enter as a copy of any creature on the battlefield, except it has vanishing 3 if that creature doesn't have vanishing. (...

({T}: Add {R} or {G}.) This land enters tapped unless you control two or more basic lands.

Creatures your opponents control have base power and toughness 0/1 until end of turn.

As this land enters, you may reveal an Island or Swamp card from your hand. If you don't, this land enters tapped. {T}: Add {U} or {B}.

Five Hundred Year Diary enters tapped. {T}: Add {U} for each Clue you control. {2}, Sacrifice Five Hundred Year Diary: Draw a card.

This land enters tapped. {T}: Add {W} or {U}. {3}{W}{U}: Until end of turn, this land becomes a 4/4 white and blue Elemental creature with flying a...

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Creatures you control have "Whenever o...

({T}: Add {B} or {R}.) This land enters tapped. Cycling {2} ({2}, Discard this card: Draw a card.)

Turn target creature face down. It's a 2/2 Cyberman artifact creature.

({T}: Add {G} or {W}.) This land enters tapped unless you control two or more basic lands.

Enchant noncommander creature You control enchanted creature. Enchanted creature gets +2/+2 and can't be blocked unless it's attacking its owner or...

{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuf...

You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other t...

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Time travel. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter.) Stor...

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

{2}{U}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy. Ultimate Sacrifice — {1}{U}, Sacrific...