Eland Umbra

Enchant creature
Enchanted creature gets +0/+4.
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Lowland Giant

Ambush Party

Political Trickery

Exchange control of target land you control and target land an opponent controls. (This effect lasts indefinitely.)

Highland Forest

({T}: Add {R} or {G}.)
Highland Forest enters tapped.

Outland Boar

Outland Boar can't be blocked by creatures with power 2 or less.

Grassland Crusader

{T}: Target Elf or Soldier creature gets +2/+2 until end of turn.

Highland Berserker

Whenever Highland Berserker or another Ally you control enters, you may have Ally creatures you control gain first strike until end of turn.

Lowland Oaf

{T}: Target Goblin creature you control gets +1/+0 and gains flying until end of turn. Sacrifice that creature at the beginning of the next end step.

Grasslands

Grasslands enters tapped.
{T}, Sacrifice Grasslands: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.