Clan Defiance deals X damage to target player or planeswalker
Its hard to tell what deck is looking for this combination of abilities, but it pays off if you can keep connecting with it
For example, say a player casts Croaking Counterpart (a sorcery that says "Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog.") targeting Goblin Glasswright
The art by Tony DiTerlizzi features a Beholder battling an adventurer, most likely in the Hive where these Eye Tyrants live
Proliferating it will also let you use it as protection for something like Atraxa, Praetors Voice Preston, the Vanisher FromTheShire: Let the Felidar Guardian shenanigans commence
The amount of Pack Point each card costs is tied to its rarity, meaning, just like with the physical ones, Pokmon TCG Pocket cards follow the rule of - the rarer it is, the more it will hurt your bank account