Two-Headed Sliver

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)

Heart Sliver

Striking Sliver

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

Flame Slash

Flame Slash deals 4 damage to target creature.

Gemhide Sliver

All Slivers have "{T}: Add one mana of any color."

Forest

Muscle Sliver

Mountain

Rugged Highlands

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {R} or {G}.

Hunter Sliver

All Sliver creatures have provoke. (Whenever a Sliver attacks, its controller may have target creature defending player controls untap and block it if able.)