Haradrim Spearmaster

Reach
At the beginning of combat on your turn, another target creature you control gets +1/+0 until end of turn.

Crossroads Consecrator

{G}, {T}: Target attacking Human gets +1/+1 until end of turn.

Kodama's Reach

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Intrepid Provisioner

Trample
When Intrepid Provisioner enters, another target Human you control gets +2/+2 until end of turn.

Halana, Kessig Ranger

Reach
Whenever another creature you control enters, you may pay {2}. When you do, that creature deals damage equal to its power to target creature.
Partner (You can have two commanders if both have partner.)

Burning-Tree Emissary

When Burning-Tree Emissary enters, add {R}{G}.

Dawnhart Disciple

Whenever another Human you control enters, Dawnhart Disciple gets +1/+1 until end of turn.

Bloodlust Inciter

{T}: Target creature gains haste until end of turn. (It can attack and {T} this turn.)

Social Climber

Alliance — Whenever another creature you control enters, you gain 1 life.

Crimson Mage

{R}: Target creature you control gains haste until end of turn. (It can attack and {T} this turn.)

Cultivate

Civic Gardener

Whenever Civic Gardener attacks, untap target creature or land.

Kronch Wrangler

Trample
Whenever a creature you control with power 4 or greater enters, put a +1/+1 counter on Kronch Wrangler.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Alena, Kessig Trapper

First strike
{T}: Add an amount of {R} equal to the greatest power among creatures you control that entered this turn.
Partner (You can have two commanders if both have partner.)

Monastery Swiftspear

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Riot Ringleader

Whenever Riot Ringleader attacks, Human creatures you control get +1/+0 until end of turn.