REGIGANG (EXP)

Standard Regis deck powered up with Expanded cards.

Double Turbo /  Twin replaced by the better DCE. Aurora Energy is still really good for this deck because of the discard, to synergize with Regidrago's ability and get Energy in hand into discard pile. Prism Energy is in the deck just for more colored sources. It could use a 4/1 split with more Aurora, but I haven't noticed enough in testing for it to really matter. Any amount of Aurora is good, as long as you run enough to manually attach

Standard Regis deck powered up with Expanded cards.

Double Turbo /  Twin replaced by the better DCE. Aurora Energy is still really good for this deck because of the discard, to synergize with Regidrago's ability and get Energy in hand into discard pile. Prism Energy is in the deck just for more colored sources. It could use a 4/1 split with more Aurora, but I haven't noticed enough in testing for it to really matter. Any amount of Aurora is good, as long as you run enough to manually attach at least once in a bind.

Battle Compressor is a huge boon to this deck. A single Compressor finds the exact energy you need to turbo out with Regigigas, and each subsequent Compressor is another full activation of Ancient Wisdom and another attacker set up.

Rescue Stretcher replaces Ordinary Rod to more efficiently return KOed Regis.

VS Seeker allows more singleton Supporters as usual, and Trainers' Mail ups the efficiency of the deck thanks to all the Trainers.

N typically isn't as good in single-prize decks. Marnie is a decent alternative, if you find N to be a dead draw more often than not. I would use Colress since we will have a full Bench most of the time, but N or Marnie are in the deck to control the opponent's hand more than they are to draw new cards.

Field Blower / Path to the Peak prevent ability-locks from Garbotoxin, Silent Lab, etc. If Regigigas' ability is shut off then the deck is suddenly clunky and requires several turns of set-up.

Computer Search could be used interchangably with Dowsing Machine, both fulfill similar purposes. I wouldn't use Life Dew since there's no space for Tool recursion, and Master Ball is kind of worse than Quick Ball for this deck specifically. The discard on Comp Search / Dowsing is relevant as well.

The deck may need more card draw.