Deck building considerations must account for energy distribution, synergy with other cards, and prevalent counter strategies to mitigate the risk of giving away too many Prize cards too quickly
Have a good one, and get back to battling
At the beginning of that turn's upkeep, cumulative upkeep adds an age counter and then says, "Hey, pay 1." (This assumes your abilities can speakmine can.) Echo sits mostly quietly, though it occasionally mumbles about the old days

Trainer (Rockets Secret Machine) Common 80/82: Rainbow Energy Energy Special Rare 81/82: Full Heal Energy Energy Special Uncommon 82/82: Potion Energy Energy Special Uncommon 83/82: Dark Raichu Lightning Rare Secret Common: 49/82: Abra Psychic Common 50/82: Charmander Fire Common 51/82: Dark Raticate Colorless Common 52/82: Diglett Fighting Common 53/82: Dratini Colorless Common 54/82: Drowzee Psychic Common 55/82: Eevee Colorless Common 56/82: Ekans Grass Common 57/82: Grimer Grass Common 58/82: Koffing Grass Common 59/82: Machop Fighting Common 60/82: Magnemite Lightning Common 61/82: Mankey Fighting Common 62/82: Meowth Colorless Common 63/82: Oddish Grass Common 64/82: Ponyta Fire Common 65/82: Psyduck Water Common 66/82: Rattata Colorless Common 67/82: Slowpoke Psychic Common 68/82: Squirtle Water Common 69/82: Voltorb Lightning Common 70/82: Zubat Grass Common 78/82: Goop Gas Attack Trainer Common 79/82: Sleep

(2023-10-13) When casting a spell as an Adventure, use the alternative characteristics and ignore all of the card's normal characteristics