Under Watch
2WW
Enchantment - Aura
Enchant Creature
When ~ enters the battlefield, create two 1/1 white Soldier creature tokens.
Enchanted creature can't attack or block.

Simple Pacifism variant. Surprisingly, it doesn't seem to have been printed yet.

Radiant Grove
Land
~ enters the battlefield tapped.
When ~ enters the battlefield, add one mana of any color.
T: Add G.

Yeah, I know it breaks the "nothing better than a basic land" rule. But it's probably not better than the duals people actually play, so I don't really care.

Avarice Druid
G
Creature - Elf Druid
T: Add one mana of any color a land an opponent controls could produce.
1/1

The Joyous Work
2UGB
Enchantment - Saga
When ~ enters the battlefield and at the beginning of your precombat main phase, put a +1/+1 counter up to one target creature.
I, II, III - Proliferate.

Not sure about this one. The extra static ability is ugly on a lot of levels, but without it I think you almost always want to burn straight through.

Ardenvale Marshal
2WW
Creature - Human Knight
Creatures you control get +1/+1.
2/2
//
Muster for Battle
2W
Instant
Create two 1/1 white Soldier creature tokens.

Re-engineer
1UR
Instant
Copy target instant or sorcery spell with converted mana cost 3 or less in your graveyard. You may cast the copy without paying its mana cost.
Jump-start

I thought of this a while ago, and at the time I had a better name. Still, a nice bit of utility for a spellslinger deck.