The Lost Caverns of Ixalan Promos

Creature — Merfolk Wizard

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.)

Tishana's Tidebinder

Fish 🐠

kalamaximus

​Strain Foxtrot: [pneumonia]
Virulenance: 7.5/10 
Pathology: The newest addition to the armory. This organism operates via extreme cellular filtration (the "Explore" mechanic). Every combat cycle, the organism rapidly sequences its own DNA—either drawing vital lands to flood the board or permanently mutating its host bodies with +1/+1 counters

pulmonary edema 

Strain Charlie - [Toxoplasma gondii]
Virulence: 8/10
​Pathology: Arguably the most insidious organism in the lab. It exhibits aggressive mimicry and neurological attacks, presenting itself to hosts as a symbiotic "Group Hug" organism. In truth, it feeds on opponents' resources, lowering their threat assessment and immune responses until the strain becomes lethal.

Tishana's Tidebinder

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