The Shift cost of a character is often slightly cheaper than its regular cost, so (as long as you're willing to 'lose' a card you've already played) you can get your big hitters on the board much sooner if they're Shifted
Better yet, being a sorcery triggers a lot of synergies within the set, so Relm's Sketching is bound to be one of the better uncommons in blue
At one Green mana, Snakeskin Veil operates as a strictly better version of Rangers Guile - a card from Core Set 2021 - which only applies a temporary +1/+1 and hexproof for the same cost
Enchantments There is a pretty sizeable pool of one black mana, when this creature dies, it doesnt die/returns to the field, both on enchantments and on instants, so Im not going to talk about those right now
Zapdos's Pokmon Power deals 30 damage when it is put into play and Big Thunder deals 70 damage except it can target your Pokmon as well, and the target is chosen strictly at random