Jumbo Cactuar, and Ruthless Technomancer

Prerequisites

• Jumbo Cactuar on the battlefield
• Ruthless Technomancer 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 Ruthless Technomancer by paying
3. When Ruthless Technomancer enters the battlefield, it triggers, causing you to sacrifice Jumbo Cactuar and create 10,000 Treasure tokens

Results

• Near-infinite colored mana
• Near-infinite Treasure tokens
• Return all creature cards from your graveyard to the battlefield