Zhur-Taa Goblin
Creature — Goblin Berserker
Riot (This creature enters with your choice of a +1/+1 counter or haste.)
Among the Zhur-Taa Clan, goblins are the first to enter battlefury. When the battle is over, the survivors are still frothing at the mouth, looking for someone to hit.
Wayne Reynolds
Ravnica Allegiance (RNA)
• #215Rulings
If a creature entering the battlefield has riot but can’t have a +1/+1 counter put onto it, it gains haste.
(wotc • 2019-01-25)
If you choose for the creature to gain haste, it gains haste indefinitely. It won’t lose it as the turn ends or as another player gains control of it.
(wotc • 2019-01-25)
Riot is a replacement effect. Players can’t respond to your choice of +1/+1 counter or haste, and they can’t take actions while the creature is on the battlefield without one or the other.
(wotc • 2019-01-25)
Rulings
If a creature entering the battlefield has riot but can’t have a +1/+1 counter put onto it, it gains haste.
(wotc • 2019-01-25)
If you choose for the creature to gain haste, it gains haste indefinitely. It won’t lose it as the turn ends or as another player gains control of it.
(wotc • 2019-01-25)
Riot is a replacement effect. Players can’t respond to your choice of +1/+1 counter or haste, and they can’t take actions while the creature is on the battlefield without one or the other.
(wotc • 2019-01-25)