Jumbo Cactuar, and Chastise

Prerequisites

• Jumbo Cactuar on the battlefield
• Chastise in hand
• undefined available

Steps

1. Declare Jumbo Cactuar as an attacker, triggering its ability, giving it +9999/+0 until end of turn
2. Cast Chastise by paying , destroying Jumbo Cactuar and causing you to gain 10,000 life

Results

• Near-infinite lifegain