Brawl Not Legal Vintage Banned Timeless Not Legal Commander Legal Pauper Banned Oathbreaker Banned Penny Not Legal
That said, if your deck does run Equipment, +1/+1 counter effects, or anthems, Esper Sentinels tax can get truly untenable, virtually guaranteeing you three or more cards per turn cycle
Voltron decks, where stacking a bunch of powerful buffs on one creature Mutate from 2020s Ikoria comes to mind gain another valuable attacker that can plus card advantage, which can then feed Mondos own protection effect
(To mill a card, a player puts the top card of their library into their graveyard.) Whenever one or more Rogues you control deal combat damage to a player, that player mills a card for each 1 damage dealt to them
Still, a powerful and flavorful card that rewards clever sequencing and sneaky plays