Ravenous Rats

+1: Untap two target lands. −1: Create a 3/3 green Beast creature token. −4: Creatures you control get +3/+3 and gain trample until end of turn.

1G: This creature gets +2/+2 until end of turn. Activate only once each turn. Madness 0 (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Echo 1G (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) 1G: Regenerate this creature.

Defender (This creature can't attack.) T: Add G.

Discard a card: This creature gets +1/+1 and becomes the color of your choice until end of turn.

Whenever a Beast enters, you may draw a card.

Shroud (This creature can't be the target of spells or abilities.) Fading 3 (This creature enters with three fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)

Sacrifice a Beast: You gain 4 life.