Combat in Magic: The Gathering — Attacking, Blocking, and Damage
The combat phase is where most games of Magic are actually decided — not by the spells you cast, but by the creatures you send across the table and the choices your opponent has to make in response. Combat is a structured, multi-step process governed by rules in the Magic: The Gathering Comprehensive Rules, a document that Wizards of the Coast maintains and updates with every major set release. Grasping how combat works — from declaring attackers to resolving trample damage — is foundational to playing well at any level.
Definition and scope
Combat in Magic is a discrete phase of each turn, sitting between the player's main phase and their second main phase. It is not simply "creatures fight." It is a structured sequence of steps with specific windows for players to cast spells and activate abilities, and the ordering of those windows matters enormously.
The combat phase breaks into 5 steps, as defined in section 506 of the Comprehensive Rules:
- Beginning of combat — A window opens before any attackers are declared. Notably, this is where effects that say "at the beginning of combat" trigger.
- Declare attackers — The active player chooses which untapped creatures to attack with and announces which player or planeswalker each is attacking. Attacking creatures become tapped.
- Declare blockers — The defending player assigns blockers. Multiple creatures can block a single attacker; one creature cannot block multiple attackers unless it has a specific ability like Reach or similar multi-block text.
- Combat damage — Creatures deal their power in damage to what they're assigned to. First Strike and Double Strike create a separate, preceding damage step for creatures with those abilities.
- End of combat — Another spell/ability window closes out the phase before the second main phase begins.
For a deeper look at how each step sequences with the turn structure, the combat phase breakdown covers the timing architecture in granular detail.
How it works
When a creature attacks, it deals damage equal to its power. When it receives damage equal to or greater than its toughness within a single turn, it is destroyed — placed in the graveyard — as a state-based action. Both things can happen simultaneously: two creatures dealing lethal damage to each other in the same damage step is called a "trade," and it is one of the most common outcomes of combat.
Blocking works on an assignment system. If two creatures block one attacker, the attacking player must declare a damage assignment order for that attacker — deciding which blocker receives damage first. The attacker must assign lethal damage (equal to that blocker's toughness, accounting for deathtouch) to the first creature in the order before any damage spills to the second. This is the foundation of how Trample works: a creature with Trample only needs to assign lethal damage to each blocker, and the remainder goes directly to the defending player.
Damage that is not prevented, redirected, or otherwise modified is dealt simultaneously among all combat participants in a single damage step (except when First Strike or Double Strike creates an additional step). Creatures with keywords and keyword abilities like Lifelink, Deathtouch, or Menace alter the damage resolution or blocking requirements in ways that can dramatically swing the math of any given combat.
Common scenarios
The profitable block: A 2/2 blocking a 4/4 looks like a bad trade for the defender — the 2/2 dies and no damage is prevented. But if the 2/2 has Deathtouch, it kills the 4/4 in return. Understanding ability interactions before declaring blockers separates reactive players from thoughtful ones.
The unblockable alpha strike: Aggro decks, discussed in more detail under deck archetypes, often build boards specifically to swing for lethal damage in one turn. A common setup involves 5 to 8 attacking creatures with abilities that prevent full blocks — Menace requires 2 blockers per creature, Intimidate restricts which creatures can block — so the defending player cannot stop all damage no matter how many creatures they control.
The pump spell window: After blockers are declared but before combat damage is dealt, both players can cast instants. A 2/2 that becomes a 4/4 due to a Giant Growth effect now deals 4 damage and survives combat against a 3/3 blocker. The declare blockers step is the most spell-reactive moment in the entire combat phase.
The planeswalker attack: Creatures can attack planeswalkers directly. Damage dealt to a planeswalker removes that many loyalty counters; at 0 loyalty, the planeswalker is put into the graveyard. This creates a common decision point: defend the planeswalker or let it take damage and use blockers elsewhere.
Decision boundaries
The two most consequential decisions in combat are made by different players: the attacker chooses who swings, the defender chooses who blocks. Neither decision is reversible once the step advances.
Attacking decisions hinge on:
- Board state math — can enough damage get through to matter?
- Tempo — is tapping creatures worth the risk of being caught open next turn?
- Information management — does the opponent have untapped mana for a combat trick? The principles behind this read more deeply in reading the board state and bluffing and information management.
Blocking decisions hinge on:
- Toughness stacking — can 2 creatures together absorb the attacker without losing one unnecessarily?
- The "do nothing" option — sometimes allowing damage through is correct if the blockers are more valuable alive.
- Chump blocking — sending a 1/1 in front of a 6/6 to survive another turn is often the correct play even if it feels bad. The Comprehensive Rules do not require a block to be profitable, only legal.
The full context of Magic's rules framework — from zones to the stack — is documented at Magic: The Gathering Authority, and for a broader orientation to how strategic decision-making fits into the game overall, the conceptual overview of recreation places combat within the wider structure of competitive and casual play.