Annie Joins Up 
Legendary Enchantment
When Annie Joins Up enters, it deals 5 damage to target creature or planeswalker an opponent controls. If a triggered ability of a legendary creature you control triggers, that ability triggers an additional time.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL