On top of being unable to be damaged while on the bench, it has multiple incredibly useful attacks that can help players turn the tides of battle in an instant
Cephalid Coliseum (Ext, S, Block) While not usable before threshold is achieved, and quite painful until then, the Coliseum provides a quick and easy way to filter your hand
Sword of Deep-Seated
For me personally, Id probably be in GW mostly on the back of good summons, rares, and Rinoa Heartilly
Latias ex Special Illustration Rare Latias is the second most expensive card in Surging Sparks
Proliferating first means every planeswalker, creature, or permanent with counters gets stronger, then those permanents phase out, dodging almost any removal or wipe until your next turn