Creature â Goblin
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Whenever Grenzo's Ruffians deals combat damage to an opponent, it deals that much damage to each other opponent.
You determine the size of the bonus as the melee ability resolves. Count each opponent that you attacked with one or more creatures. It doesnâ€™t matter if the attacking creatures are still attacking or even if they are still on the battlefield. It also doesnâ€™t matter if the opponent you attacked is still in the game.
Melee will trigger if the creature with melee attacks a planeswalker. However, the effect counts only opponents (and not planeswalkers) that you attacked with a creature when determining the bonus.
It doesnâ€™t matter how many creatures you attacked a player with, only that you attacked a player with at least one creature. For example, if you attack one player with Wings of the Guard and another player with five creatures, Wings of the Guard will get +2/+2 until end of turn.
Creatures that enter the battlefield attacking were never declared as attackers, so they wonâ€™t count toward meleeâ€™s effect. Similarly, if a creature with melee enters the battlefield attacking, melee wonâ€™t trigger.