graded psyduck card Pokemon 151 Full Art Psa Error Label for Sale in Fontana, CA Water Rarity 2002 Pokemon Legendary Collection #88

This is fine, and if you want to test matchups with a 25-card sideboard in mind, by all means do

Its thicker and stiffer than cheap office cardstock, but not so thick that decks become bricks when sleeved

As another four-mana Legendary Creature, although in White and Blue and only a 2/4 with flying, Brago is a little less hench than Thassa

It's relatively easy to cast as far as its casting cost goes, and once it's on the battlefield, you never have to do anything with it again, since it'll automatically proliferate at the start of each of your end steps

I also printed some of my older Dunsparce cards I had never printed before

Yes, that is also the main disadvantage to getting card advantage through drawing cards and yes, discard is also weakened by diminishing returns which card draw isn't, I am not comparing discard to card draw as a way towards card advantage, just stating the facts about cards in isolation