Riot (This creature enters with your choice of a +1/+1 counter or haste.)
When Ravager Wurm enters, choose up to one —
• Ravager Wurm fights target creature you don’t control.
• Destroy target land with an activated ability that isn’t a mana ability.
If a creature entering the battlefield has riot but can't have a +1/+1 counter put onto it, it gains haste.
25-01-2019
wotc
If the target of Ravager Wurm's first mode isn't a legal target as that ability resolves, or if Ravager Wurm has left the battlefield, neither creature will deal or be dealt damage.
25-01-2019
wotc
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.
25-01-2019
wotc
Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keyword abilities are activated abilities and will have colons in their reminder text. An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate.
25-01-2019
wotc
You may choose neither mode for Ravager Wurm's triggered ability. In this case, the ability is removed from the stack with no effect.
25-01-2019
wotc
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.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.