MTG >Combos >Cloudstone Curio +Elvish Aberration +Frog Tongue +Nature's Chosen +

With Cloudstone Curio and Elvish Aberration in play, Tap Elvish Aberration to add 3 mana. Cast Nature's Chosen on Elvish Aberration, and use its ability to untap it. Cast Frog Tongue on Elvish Aberration and, with the Cloudstone Curio's ability, return Nature's Chosen to your hand. Repeat the process for infinite mana and infinite draw.