MTG Gruul Aggro Deck by Stefano Filippi

This creature enters with a +1/+1 counter on it if you control a permanent with mana value 4 or greater. Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature.

At the beginning of combat on your turn, if you control another Wolf or Werewolf, put a +1/+1 counter on this creature. When this creature dies, you gain life equal to its power.

Pack tactics — Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, draw a card. {3}{G}: Until end of turn, this creature has base power and toughness 5/3, gains trample, and isn't a Human.

Vigilance Whenever this creature enters or attacks, exile a card from a graveyard. Spells you cast cost {1} less to cast for each card type they share with cards exiled with this creature.

First strike (This creature deals combat damage before creatures without first strike.) Reach (This creature can block creatures with flying.) At the beginning of combat on your turn, put X +1/+1 counters on another target creature you control, where X is Halana and Alena's power. That creature gains haste until end of turn.

(Gain the next level as a sorcery to add its ability.) When this Class enters, create a 2/2 green Wolf creature token. {1}{G}: Level 2 Whenever you attack, put a +1/+1 counter on target attacking creature. {3}{G}: Level 3 You may look at the top card of your library any time. You may cast creature spells from the top of your library.

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Choose one. Until end of turn, target creature you control has that base power and toughness, becomes that creature type, and gains that ability. • 1/3 Turtle with hexproof. • 1/5 Spider with reach. • 3/3 Elephant with trample.

Thundering Rebuke deals 4 damage to target creature or planeswalker.

If you control two or more other lands, this land enters tapped. {T}: Add {R}. {3}{R}: Until end of turn, this land becomes a 3/2 red Goblin creature with "Whenever this creature attacks, create a 1/1 red Goblin creature token that's tapped and attacking." It's still a land.

({T}: Add {R}.)

{T}: Add {G}. Channel — {1}{G}, Discard this card: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {G}.)

This land enters tapped unless you control two or more other lands. {T}: Add {R} or {G}.

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