Combo Avenger of Zendikar +Eldrazi Displacer +Ashnod's Altar
This combo needs at least three lands in play to work. When Avenger of Zendikar enters the battlefield, it creates a 0/1 token for each land you control. Sacrifice two of these tokens with Ashnod's Altar to add 4 colorless mana. With this mana, activate Eldrazi Displacer's ability to blink Avenger of Zendikar. Avenger of Zendikar will enter the battlefield again, creating more tokens. Repeat the process to generate infinite tokens, mana, and ETBs.