Become Brutes is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

One or two target creatures each gain haste until end of turn. For each of those creatures, create a Monster Role token attached to it. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has trample.)

Complete guide

Become Brutes is a powerful red sorcery that turns your ordinary creatures into aggressive threats in an instant. By granting haste and the Monster Role, this spell ensures your board state becomes significantly more dangerous the moment it resolves. Whether you are pushing for the final points of damage or setting up a multi-creature assault, this card is a versatile tool for any aggressive deck.

What It Does

Become Brutes allows you to select one or two target creatures. Each of these targets gains haste until the end of the turn, allowing them to attack or use tap abilities immediately. Furthermore, for each creature targeted, you create a Monster Role token and attach it to that creature. The Monster Role provides a +1/+1 power and toughness boost and the trample keyword, making it much harder for your opponents to block effectively.

How It Resolves Step by Step

First, you cast the spell and choose one or two target creatures. Upon resolution, the spell checks if the targets are still legal. For each legal target, the creature gains haste. Then, a Monster Role token is created and attached to each respective creature. If a creature already had a Role you controlled, that previous Role is put into the graveyard as a state-based action immediately after the new Role is attached.

Common Mistakes

A common point of confusion involves the Role limit. Remember that a single creature can only have one Role controlled by the same player at a time. If you target a creature that already has a Sorcerer Role, the Monster Role will replace it. Additionally, since this is a sorcery, you cannot use it to surprise a blocker during your opponent's turn; it must be cast during one of your main phases.

When to Play It

The best time to cast Become Brutes is during your Precombat Main Phase when you have just summoned new creatures. Because it provides both haste and trample, it is ideal for bypassing small tokens that your opponent might use to chump block. It is also highly efficient when you have two creatures that can benefit from the power boost simultaneously, maximizing the value of your two mana.

Interaction examples

Aggressive Opening

You cast Become Brutes targeting a recently played creature. The creature gains haste, becomes a 2/2 (if it was a 1/1) due to the Monster Role, and gains trample. You may now attack immediately.

Double the Trouble

You choose two different creatures you control as targets. Both creatures gain haste and each receives its own Monster Role token. Both creatures now have +1/+1 and trample for the rest of the game, or until the Roles are removed.

Upgrading Your Role

Monster // Sorcerer

If a creature is currently enchanted with a Sorcerer Role, and you target it with Become Brutes, it will gain haste and a new Monster Role. Because you can only control one Role on a creature, the Sorcerer Role is put into your graveyard, and the creature is left with the Monster Role's +1/+1 and trample.

Guide written with AI from the official text and rulings. Official English text prevails.