It only costs half of your life points, which can be a lot depending how much you have but it also means youll never have too little life points to activate it
The support it received in Blazing Dominion helped elevate it to the top tables where it previously struggled
Heliod, the Radiant Dawn / Heliod, the Warped Eclipse Heliod, the Radiant Dawn is just an oversized Auramancer, but transform this baddie and you get Heliod, the Warped Eclipse, a Phyrexian god that converts opponents card draw into cost reduction for your spells
Toss in a little cost reduction, and you have a great card
if they do, you can play Briar and, if your opponents Active Pokemon is Knocked Out on the same turn by an attack using your Tera Pokemon, you can take an extra Prize Card