Best of 1 is just a single game, Best of 3 involves sideboarding for the second and third games, which aligns with how Magic tournament play goes
These can be incorporated into your decks as a subtheme sometimes, or they can occasionally be a main theme in a very particular/lucky draft
Right now, these look like the best Cube additions from Unstable : Ive also heard some chatter around Crow Storm (for Cubes supporting storm), Super-Duper Death Ray, Masterful Ninja, and Hangman, though theyre clearly a tier below the six Ive pictured above
Ichormoon Gauntlet gets a lot of attention for how it gives planeswalkers additional loyalty abilities, but it also lets you do a mini-proliferate on one permanent whenever you cast a noncreature spell
(Until your next turn, that creature cant attack or block and its activated abilities cant be activated.) 2/2 Illustrated by Mikls Ligeti Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
This does create the question of how exactly the card came to be and why exactly the card designers would create a card that has the sole intention of forcing a draw, and also why one would play it
