mtg cards thickness MayDay Games Premium Card Sleeves – 50 Count, Clear 90 Micron Thickness, Medium Size (63.5 x 88 mm), Compatible with Magic: The Gathering & More – SKU: MDG-7077 : Toys & Games thickness of mtg card Sleeve

Without a way to kill your Commander and Oko, you're locked into a situation where your Commander is held hostage

Then exile it.) A player may choose to discard their hand even if their hand contains zero cards

The Cauldron exiles a key creature from a graveyard, usually Vivi Ornitier, and grants its activated abilities to all of your creatures with +1/+1 counters

Those copies can then do the same

For my money, this is a nice payoff with some big upside, but having the downsides of needing to connect without any built-in evasion plus relying on your opponent picking a good thing for you to reanimate makes this too difficult to use