Build up a lot of counters on this and you suddenly have quite the bargaining chip - who is going to aggress the player who can nuke 10 permanents with a terrible bulk rare from back when your parents were in High School
No power, no free spells, no mana rocks, removal a step below the best (removal should be able answer threats with MV+1, broadly speaking), no easy auto includes on power level (Fable of the Mirror-Breaker, Palantir of Orthanc, ...)
While their stock may vary, many carry booster packs, deck-building sets, and sometimes even rare cards
As a result, the developers will be sunsetting the legacy software called The Pokmon TCG Online officially on June 5, according to an FAQ
As someone who plays Karlov of the Ghost Council, I am speaking about myself here
For surge foil showcase Ring cards, we took the 10 uncommons (50%), 14 rares (11.7%), and 6 mythic rares (2.5%) that can be found in the summer release and gave them the surge foil treatment