Ninth Edition

Whenever Rogue Kavu attacks alone, it gets +2/+0 until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Festering Goblin dies, target creature gets -1/-1 until end of turn.

Other Goblin creatures get +1/+1 and have mountainwalk. (They can't be blocked as long as defending player controls a Mountain.)

{1}{G}: Rootwalla gets +2/+2 until end of turn. Activate this ability only once each turn.

Swarm of Rats's power is equal to the number of Rats you control.

{R}: Flowstone Shambler gets +1/-1 until end of turn.

Haste (This creature can attack and {T} as soon as it comes under your control.)

Flying, vigilance (This creature can't be blocked except by creatures with flying or reach, and attacking doesn't cause this creature to tap.)

When Ravenous Rats enters the battlefield, target opponent discards a card.

When Kavu Climber enters the battlefield, draw a card.

Tap an untapped creature you control: Llanowar Behemoth gets +1/+1 until end of turn.

Yavimaya Enchantress gets +1/+1 for each enchantment on the battlefield.

When Viridian Shaman enters the battlefield, destroy target artifact.

First strike (This creature deals combat damage before creatures without first strike.) {R}: Sandstone Warrior gets +1/+0 until end of turn.

{T}: Orcish Artillery deals 2 damage to any target and 3 damage to you.

Goblin Brigand attacks each combat if able.

{B}: Looming Shade gets +1/+1 until end of turn.

Flying, vigilance

Haste (This creature can attack and {T} as soon as it comes under your control.)

Whenever Elvish Berserker becomes blocked, it gets +1/+1 until end of turn for each creature blocking it.