If an effect instructs you to do something based on Contortionist's power or toughness that can only be done in whole numbers, such as draw cards, and Contortionist's power or toughness isn't a whole number, ignore that instruction
You can obtain the Carracosta (3-Diamonds rarity) card by opening Mega Rising: Mega Gyarados from Mega Rising set
It only hits creatures, but it has zero downside
The Legends of Edge of Eternities Commander The Hearthhull Eumidian (Evendo Brood), it/its Though it may be a colossal transport vessel, the Hearthhull is technically an ancient, living Eumidian that has grown massive enough over the centuries to travel the stars with an entire brood of seed pods
Still, the total deck value is pretty reasonable at the moment, with the average value at $99.10
Some of the most useful ones are: Tamiyo's Safekeeping, Veil of Summer, Shardmage's Rescue, Surge of Salvation, and Snakeskin Veil