Ugin: Colorless
    Deal 2 damage to creature or player. Exile coloured permanent. Gain 7 life, draw 7 cards, play up to 7 permanents (free)

Atarka: Green/Red
    Dragons get double strike

Kolaghan: Black/Red
    When dragon attacks all creatures get 1/0

Dromoka: Green/White
    Bolster 2 when dragon attacks.

Soulfire Grand Master: White (Blue or Red ability)
    instants and sorceries have lifelink. Ability to place spells into hand    instead of graveyard

Shaman of the Great Hunt: Red (Green or Blue ability)
    whenever a creature deals damage place 1/1 on that creature you control. Ability to draw card for each creature power 4 or more.

Shifting Loyalties: Blue
    Exchange control of two permanents of the same types.

Mindscour Dragon: Blue
    Whenever he deals damage to opponent target discards top 4 library cards.

Sage-Eye Avengers: Blue
    Whenever they attack, return target creature of power less than their own to owners hand.

Monastery Siege: Blue
    *At beginning of each turn draw an extra card then discard one.
    or *Spells opponents cost that target me or a permanent of mine costs 2 more to cast.

Frontier Siege: Green
    *Add 2 green to mana pool in each main phase.
    or *Whenever a creature of yours with flying enters field you may have it fight target creature.

Supplant Form: Blue
    Return target creature to owners hand and receive token copy.

Prism Array: Blue (ability of all colours)
    Tap creature once for each colour of mana spent when casting. Spend one of each mana to scry 3

Niv-Mizzet, the Firemind: Blue/Red
    Whenever you draw a card, deal one damage to target. Tap to draw a card.

Skyrider Elf: Blue/Green
    1/1 counter for each mana type spent to cast.

Kolaghan's Command: Black/Red
    Choose Two:
      Return target creature from grave to hand
      Target discards a card
      Destroy target artifact
      Deal 2 damage to target

Kiora's Follower: Blue/Green
    Tap to untap target

Omnath, Locus of Rage: Red/Green
    On land placement, summon 5/5 r/g elemental
    Whenever elemental dies, deal 3 damage to target

Savage Ventmaw: Red/Green
    When he attacks add 3red and 3green to mana pool until used.

Dwynen: Green
    Each elf gets 1/1. Gain 1 life for each attacking elf.

Mob Rule: Red
    Gain control of creature 4 or higher, or 3 or lower. Untap and give them haste for this turn. return at end of turn.

Zada, Hedron Grinder: Red
    Whenever your spell targets him, copy and apply that spell to every one of your creatures it could target.

Erebos's Titan: Black
    If opponents control 0 creatures, indestructible. Whenever creature leaves opponent's grave, may return to your hand from graveyard.

Tasigur: Black (Green or Blue ability)
    Delve to summon. Ability to discard two cards from library, and add opponent's grave card to your hand.

Jace's Sanctum: Blue
    Instants and sorceries cost 1 less. Whenever one is cast, scry 1.

Felidar Sovereign: White
    You win if you have 40 life or more

Narset Transcendent: White/Blue (planes)
    Look at top library card. If non-land/creature, add to hand
    Next instant/sorcery, gains rebound
    Opponents cannot cast noncreature spells.

Avarice Amulet
    Draw a card each turn

Day's Undoing: Blue
    Shuffle hands, libraries and graves together. Draw new starting hands.

Grindclock
Tap to charge. Tap to make opponent discard from library for each charge.