In a sense he has to be, because once you play Masticore you no longer have a deck
Regardless, we've picked out the best five cards from those revealed so far, and these are all still capable of changing games in an instant
But in this case, a 4/3 for two mana is excellent, and creating two Lander tokens is akin to drawing two instant-speed Rampant Growths
Modern Horizons 3 Booster Fun Borderless Borderless cards make a huge comeback in Modern Horizons 3 Play Boosters and Collector Boosters, with 5 double-faced planeswalkers and 12 lands showing off this amazing treatment
Worldly Tutor Green Sun's Zenith Chord of Calling Natural Order Survival of the Fittest Season of Growth Trail of Crumbs Treefolk Harbinger Time of Need Evolution Charm Edge of Autumn Mirri's Guile Evolutionary Leap Vivien's Arcbow Mulch Sylvan Scrying Crop Rotation Summoner's Pact Satyr Wayfinder Gather the Pack Tracker's Instincts (even without access to blue this is still quite playable, if you have other spells you Gather, if you might have blue you Instincts and if you are super keen you pack both!) 16

People use proxies for a bunch of extremely normal reasons: - Playtesting new decks before spending money - Commander upgrades without chasing down every last staple immediately - Cube maintenance (updating lists without re-buying a small nations GDP) - Kitchen table games where the goal is fun, not authentication theater - Protecting valuable cards by keeping originals safe while you play with substitutes If your group is on board, proxies are often the simplest way to keep games creative, fair, and actually happening