Some cards for RTR???

So now that 4 of the 5 mechanics in RTR let's start making CARDS!

Selesnya:
Spreading the Sprouts
Sorcery
Populate X times.

Rakdos:

Goblin Ragejest
Creature - Goblin Berserker
Unleash (You may have this creatures enters the battefield with a +1/+1 counter on it. It cannot block for as long as it has any +1/+1 counters on it.)
As long as Goblin Ragejest has a +1/+1 counter on it, t has haste.
1/1

Rakdos Acupuncturist
Creature - Human Shaman
Unleash (You may have this creatures enters the battefield with a +1/+1 counter on it. It cannot block for as long as it has any +1/+1 counters on it.)
As long as Rakdos Acupuncturist has a +1/+1 counter on it, whenever you cast a creature Spells, it gains Unleash.
1/1

Rix Maadi Stinger
Creature - Human Shaman
Unleash, deathtouch.
, remove a +1/+1 counter from this card: Rix Maadi Stinger deals 1 damage to target creature or player.
0/1

Izzet:

Dreamwave
Instant
Tap target creature your opponent controls.
Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each".)

Overcalibration
Sorcery
Destroy target artifact.
Overload (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each".)

Golgari:

Feeding for the Death
Sorcery
Search your library for a creature card and put that card into your graveyard and gain Life equal to its power. Then shuffle your library.

Spreading the Sprouts seems overcosted, XGGW would be better.

Rakdos Acupuncturist is pretty cool. I like it.

Overcalibration's Overload cost is... overloaded. xD 2RR would be better, since the way you worded it destroys all artifacts, including yours.

Feeding for the Death is the best card ever.

There you go...