That player can always choose to lose 3 life, even if they have cards to discard or nonland permanents to sacrifice
In this article, I'll be covering the overall rules of the game, what each type of card does, and how to use them
(Big Furry Monster, Right Side) Bad Ass Blacker Lotus Blast from the Past Bloodletter Booster Tutor Bosom Buddy Bronze Calendar Brushstroke Paintermage Bureaucracy Burning Cinder Fury of Crimson Chaos Fire Bursting Beebles Cardboard Carapace Cardpecker Carnivorous Death-Parrot Censorship Chaos Confetti Charm School Cheap Ass Cheatyface Checks and Balances Chicken Egg Chicken la King Circle of Protection: Art City of Ass Clam Session Clam-I-Am Clambassadors Clay Pigeon Collector Protector Common Courtesy Creature Guy Curse of the Fire Penguin Curse of the Fire Penguin Deadhead Deal Damage Denied
Another way is to use Isochron Scepter , an artifact that costs 2 and says Imprint When Isochron Scepter enters the battlefield, you may exile an instant card with converted mana cost 2 or less from your hand
Alela, Cunning Conqueror Alela, Cunning Conqueror is another Creature-centric Dimir Commander that also rewards you for casting spells on your opponents' turns
If you can consistently -X to get something good back right away then its fine, though the -8 is a bit of a pipedream