The deck focuses on repeatedly gaining life to trigger Blech's ability, using those triggers to grow a wide board of Pests, Bats, Insects, Snakes, and Spiders into massive threats. Life gain engines, whether from creatures entering the battlefield, combat damage, or recurring effects, serve as the primary fuel, turning each point of life gained into a board-wide pump for the creature types. The win condition is attacking with an army of oversized creatures across these five supported tribes, all scaling together every time the commander's trigger resolves. Win conditions can be go wide with creatures or life gain pay offs.

Blech, Loafing Pest decklist

• Jungle Hollow
• Radiant Fountain
• High Market
• Witch's Clinic
• Hidden Hideout
• Teacher's Pest
• Bogwater Lumaret
• Pest Mascot
• Eccentric Pestfinder // Turn Stones
• Pest Infestation
• Essence Warden
• Blex, Vexing Pest // Search for Blex
• Feral Appetite
• Assassin's Trophy
• Atomize
• Blood Researcher
• 3× Cankerous Thirst