The way I pilot and have built the deck revolves purposively not hitting 5 devotion unless we're ready to answer any interaction pointed at Thassa - an indestructible enchantment is difficult to get rid of for some colors, so most often we only have to cast Thassa once or twice per game
With Commander Masters underway, one card that stood out as an interesting reprint is Zilortha, Strength Incarnate
Is Pokemon TCG Pocket on iPad
Legality depends on the tournament format -- Will-o'-the-Wisp can be legal in some formats and banned or restricted in others
Otherwise, you can draw a bunch of cards (always good) or scry a bunch of cards (also good) to get back to it faster, things I dont mind doing because, you know, theyre good
Take comfort in shopping from an authorized Pokmon TCG retailer