Vulnerability

This ability is under review and is subject to change at any time

A creature with vulnerabilities takes half again as much damage (+50%) from a specific energy type, regardless of whether a saving throw is allowed or if the save is a success or failure. Creatures with a vulnerability that is not an energy type instead take a –4 penalty on saves against spells and effects that cause or use the listed vulnerability (such as spells with the light descriptor). Some creatures might suffer additional effects, as noted in their descriptions.

Some creatures are vulnerable to materials, and take additional damage when hit by the noted material. In that case, apply the appropriate extra damage per attack.

Vulnerability

Skies of Glass Planeswalker Ganny