Counters are markers that modify a permanent or players characteristics when placed on them
However, since this is part of the commander format, it might take a while to get these creatures on your board, which is where the term "ramp" comes in, adding many ways to get colorless energy on the battlefield
Mewtwo from XY EVOLUTIONS
Sensei's Divining Top Blinkmoth Nexus Auriok Champion Auriok Salvagers Aether Vial Arcbound Ravager Arcbound Worker Azusa, Lost but Seeking Boseiju, Who Shelters All Conjurer's Bauble Cranial Plating Crucible of Worlds Darksteel Citadel Desperate Ritual Zuberas
There were also a few cards that had abilities that triggered when time counters were removed from them in exile
The League & Championship Metal Energy cards hold historical value and feature exclusive designs, making them highly sought-after collectibles