I would use the Poke-Power if my opponent had any basic Pokemon with 50 hp or less on their bench, knock that Pokemon out, and then use the power again next turn when Extra Comet Punch would do 100 damage and switch in a more powerful Pokemon and knock that one out as well
Beyond just offering Shroud for a turn, Silver Shroud Costume also prevents the equipped creature from being blocked
Magic: The Gathering has been around for over 30 years, and in that time, cards have been banned for offensive content as sensibilities have changed
One draw card I would avoid using is Plusle
Roaring Moon ex decks tend to move fast and have a favorable match-up against Regidrago VSTAR, which was one of the top decks in last year's tournaments
Many decks splashed white just to run Disenchant, such as early Sligh decks which otherwise couldn't remove a Circle of Protection: Red (and yes, we're talking pre-Anarchy here)