Tishana's Tidebinder LCI/335

Set: The Lost Caverns of Ixalan
Collector Code: LCI/335
Name: Tishana's Tidebinder
Type: Creature — Merfolk Wizard
Oracle text: Flash When this creature enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as this creature remains on the battlefield. (Mana abilities can't be targeted.)
Rarity: Rare