With Hidaway 3, hidaway 3 on ETB it exiles 2 cards and we can play them later for free when it is dealing combat damage to a player
It just durdles around until one of your opponents shows you their Eldrazi
As for the seasonal promo card, it's Dash's sister, Violet Parr, Learning New Tricks, and again, it's a similar card in that it's foil with a different rarity icon rather than a brand-new design
You won't be setting up uber-complex combos or interacting with your opponents much, and you won't learn much about the newer mechanics featured in Lorcana
Its base form Froakie is mostly a liability until it evolves, and 120 HP after evolution is low enough for most leading damage dealers to one-shot it
The effect of the card is Put 1 random Basic Pokmon from your discard pile into your hand