Erika, a supporter card, heals 50 HP for any grass-type Pokmon way more than the 20 HP youd get from a Potion card
Control decks love it because being instant means it often effectively costs you nothing, whenever they don't make much of a play you can freely Opt
Please note that XLHQ versions of cards are only showed in the zoom view, regular card pictures are still used (LQ/HQ, depending on what you're using) on the battlefield and elsewhere in the game because XLHQ art is significantly more taxing in memory consumption (and in addition to that, XLHQ card borders are not cropped the way Forge expects them in order to show them properly on the battlefield anyway)
Since Ifrit costs three, youll start getting this mana around turn four or five
One is the utsushiyo, the material realm of mortals, and the other is the kakuriyo, the realm of the kami