Zhur-Taa Druid, Elite Arcanist, and Vitalize

Prerequisites

• Zhur-Taa Druid on the battlefield
• Elite Arcanist on the battlefield
• Vitalize in exile
• Zhur-Taa Druid and Elite Arcanist do not have summoning sickness

Steps

1. Activate Zhur-Taa Druid by tapping it, adding
2. Zhur-Taa Druid triggers, dealing 1 damage to each opponent
3. Activate Elite Arcanist by paying and tapping it, casting a copy of Vitalize without paying its mana cost
4. Resolve Vitalize, untapping all creatures you control
5. Repeat

Results

• Infinite damage
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control