Zodnot Echoer :1mana::symu:
Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Spend only blue and/or red mana on X.
~ deals X damage to target creature or player. You draw cards equal to the damage dealt, but not more than the amount of U spent on X, the player's life total before ~ dealt damage, or the creature's toughness.
Creature - Viashino Warrior Zombie
~ enters the battlefield with X +1/+1 counters on it.
At he beginning of your end step, sacrifice ~.
Mistetoe Order Warlock2UB
Creature - Human Wizard
Whenever another creature enters the battlefield under an opponent's control, put a -1/-1 counter on that creature and a +1/+1 counter on ~.
Orzhov Tax Files2
Artifact - Equipment
Equipped creature gets +0/+1 for each tax counter on ~ and has "T, Discard a card: Put a tax counter on ~." WB, Sacrifice ~: Target player sacrifices a land for each tax counter on ~.
Equip 1 Only two things are guaranteed in life, and the Orzhov guild specializes in both.
Carrion Vultures -- 2B
Creature -- Bird
Whenever a creature dies, put a carrion counter on Carrion Vultures.
Remove two carrion counters from Carrion Vultures: Carrion Vultures gets +1/+1 until end of turn.
Sages of the Forge :3mana::symw::symr:
Creature - Human Artificer
If you would draw a card, instead reveal the top three cards of your library. Put all equipment cards revealed this way into play and the rest on the bottom of your library in any order.
Leyline of Debt2WB
If Leyline of Debt is in your opening hand, you may begin the game with it on the battlefield.
Extort (Whenever you cast a spell, you may pay :symbw:. If you do, each opponent loses 1 life and you gain that much life.)
Chronosavant probably trumps mine.
Creature - Giant 2WW: Return Everliving Savant from your graveyard to the battlefield. Each opponent may return a creature in his or her graveyard to the battlefield.
Kaysha the Debt Ringer1WB
Legendary Creature - Human Advisor
Counter the first spell an opponent casts unless he pays 1
Whenever a Swamp or Plains you control is tapped for mana, add one more mana of that color to your mana pool.
Malleabus Abominations -- 2UU
Legendary Creature -- Shapeshifter
The "legend rule" doesn't apply to cards named Malleabus Abominations you control.
Malleabus Abominations gets +1/+1 for each other creature named Malleabus Abominations you control
If you control at least one other creature named Malleabus Abominations, each has flying. If you control at least two other such creatures, each has hexproof. If you control at least three other such creatures, each is indestructible.
Rodixi, Reality Blender :symw::symu::symb::symr::symg:
Face-down creatures get +X/+X, equal to the number of different basic land types you control.
:symu::symb::symr::symg: : Exile all face down creatures you control and return them face up under your control. They gain haste,hexproof,trample,lifelink,and intimidate until end of turn.