You can tell the rarity of your Pokemon cards by checking the rarity symbols
Each Collector Booster includes one rare or mythic with extended art, one foil mythic or rare, nine foil commons and uncommons, three special-frame cards (like showcase frames and Gilded foils), and one ancillary card (from a planeswalker deck or Commander deck, typically)
I could see running Corrupted Conscience over Control Magic if youre already gunning for the poison kill
A separate Secret Lair, Showcase: Dominaria United Textured Foil Edition, features the original five Elder Dragons from Legends in textured foil
By promising your opponent a gift, you can change up the abilities of your spells
He disincentivizes our opponents from blocking our creatures, and combines two creature types in an interesting way