Abdel Adrian, Gorion's Ward, Felidar Guardian, and Ephemerate

Prerequisites

• Abdel Adrian, Gorion's Ward in hand or in the command zone
• Felidar Guardian on the battlefield
• Ephemerate in hand
• plus enough mana to pay for command tax, if applicable available

Steps

1. Cast Abdel Adrian from the command zone by paying and command tax, if applicable
2. Abdel Adrian enters the battlefield, exiling Felidar Guardian and creating a 1/1 Soldier creature token
3. Cast Ephemerate by paying , blinking Abdel Adrian
4. Abdel Adrian leaves and enters the battlefield, causing Felidar Guardian to return to the battlefield from exile, and triggering Abdel Adrian and Felidar Guardian's enters-the-battlefield ability
5. Resolve the Abdel Adrian trigger, exiling Felidar Guardian and creating a 1/1 Soldier creature token
6. Resolve the Felidar Guardian trigger, blinking Abdel Adrian
7. Repeat from step 4

Results

• Infinite creature tokens
• Infinite ETB
• Infinite LTB