Flying Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random. 2/2
Trample Whenever Scion of Darkness deals combat damage to a player, you may put target creature card from that player’s graveyard onto the battlefield under your control. Cycling {3} ({3}, Discard this card: Draw a card.) 6/6
Flying Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one. Medomai the Ageless can’t attack during extra turns. 4/4
Experiment Kraj has all activated abilities of each other creature with a +1/+1 counter on it. {T}: Put a +1/+1 counter on target creature. 4/6
{T}: Add {C}. {X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.
Put three 1/1 green Elf Warrior creature tokens into play. Reinforce 3—3G (3G, Discard this card: Put three +1/+1 counters on target creature.)
When Chittering Witch enters the battlefield, create a number of 1/1 black Rat creature tokens equal to the number of opponents you have. 1B, Sacrifice a creature: Target creature gets -2/-2 until end of turn.
You may play Haakon, Stromgald Scourge from your graveyard, but not from anywhere else. As long as Haakon is in play, you may play Knight cards from your graveyard. When Haakon is put into a graveyard from play, you lose 2 life.
Ravenous Slime can't be blocked by creatures with power 2 or less. If a creature an opponent controls would die, instead exile it and put a number of +1/+1 counters equal to that creature's power on Ravenous Slime.
Creatures you control have flying. Creatures your opponents control lose flying and can't have or gain flying.
Enchant creature (Target a creature as you play this. This card comes into play attached to that creature.) All damage that would be dealt to you is dealt to enchanted creature instead.
Fabricate 3 (When this creature enters the battlefield, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.) Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to Marionette Master's power.
Flying, vigilance T: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.
Look at the top card of your library. You may put that card into your graveyard. Draw a card.
Whenever you cast an artifact spell, investigate. (Create a Clue token. It's an artifact with "2, Sacrifice this artifact: Draw a card.") Activated abilities of artifacts you control cost 1 less to activate. This effect can't reduce the mana in that cost to less than one mana.