Renown

Renown is an keyword ability introduced in Magic Origins. Creatures with the renown keyword become renowned and gain N +1/+1 counters the first time they deal combat damage to a player.

Description
Renowned is a designation with no rules meaning, similar to monstrous. Cards with renown, and others like Enshrouding Mist, reference the renowned designation. While monstrosity abilities can be activated (with no effect) if the creature is already monstrous, renown abilities do not trigger at all if the creature is already renowned. As such, renown will trigger only once per creature so long as that creature remains on the battlefield.

Renown was received well enough to return one day.

Rules
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Rulings

 * Renown won't trigger when a creature deals combat damage to a planeswalker or another creature. It also won't trigger when a creature deals noncombat damage to a player.
 * If a creature with renown deals combat damage to its controller because that damage was redirected, renown will trigger.
 * If a renown ability triggers, but the creature leaves the battlefield before that ability resolves, the creature doesn't become renowned. Any ability that triggers "whenever a creature becomes renowned" won't trigger.
 * A creature that's renowned stays renowned until it leaves the battlefield, even if it somehow loses all its +1/+1 counters.
 * A creature with renown and double strike will become renowned after dealing first-strike damage to a player, so it will receive +1/+1 counters before dealing regular combat damage.