This elegant loop relies on Axebane Guardian generating enough mana through its defender-scaling tap ability to repeatedly fund Temur Sabertooth's bounce activation. As you loop Axebane Guardian back to your hand and recast it over and over, Tannuk, Steadfast Second keeps the entire engine instantly ready to act by granting your creatures haste. Together, they turn a simple beast and a wall into an infinite fountain of colored mana and unending entry triggers.