The Ring's emblem of temptation relies on players having good creatures that can attack effectively without being killed by blockers too easily, so the effect may be better used by creature-heavy decks that are already adept at pushing damage, or even control decks that can attack with a single, evasive creature to close out the game
The new Golem, in particular, is one the bulkiest and most balanced Fighting types in all of Pokemon TCG Pocket
Its getting way more fun on the declare blockers step: 509.5a Ability that says whenever [a creature] blocks usually triggers only once during combat for that creature, even if it is blocking several creatures
Unless there is a card or combo that makes playing these three cards reliably and cheaply, players probably arent goin to bother with it
But there are also a lot of underwhelming, common-rarity creatures filling it up was anyone asking for a showcase Bulette, Pixie Guide, or Celestial Unicorn
Thats not to say its bad, however, as being able to effectively guarantee one kill is defintely better than nothing