Rogue's Passage

{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.

Forest

Garruk's Packleader

Whenever another creature you control with power 3 or greater enters, you may draw a card.

Briarpack Alpha

Flash (You may cast this spell any time you could cast an instant.)
When Briarpack Alpha enters, target creature gets +2/+2 until end of turn.

Alchemist's Vial

When Alchemist's Vial enters, draw a card.
{1}, {T}, Sacrifice Alchemist's Vial: Target creature can't attack or block this turn.

Elvish Mystic

Garruk's Companion

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Tread Upon

Target creature gets +2/+2 and gains trample until end of turn.

Prey Upon

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

Invasive Species

When Invasive Species enters, return another permanent you control to its owner's hand.

Somberwald Stag

When Somberwald Stag enters, you may have it fight target creature you don't control.

Brushstrider

Vigilance (Attacking doesn't cause this creature to tap.)

Territorial Allosaurus

Kicker {2}{G} (You may pay an additional {2}{G} as you cast this spell.)
When Territorial Allosaurus enters, if it was kicked, it fights another target creature.

Elemental Bond

Whenever a creature you control with power 3 or greater enters, draw a card.

Foe-Razer Regent

Flying
When Foe-Razer Regent enters, you may have it fight target creature you don't control.
Whenever a creature you control fights, put two +1/+1 counters on it at the beginning of the next end step.