This clever loop begins by casting Beck to establish a powerful passive engine where every creature entering the battlefield replaces itself by drawing you a card. As those cards enter your hand, Nadir Kraken waits to pounce, turning each draw into a chance to invest one mana into a brand-new 1/1 Tentacle token and a +1/+1 counter. The moment that Tentacle arrives, Beck triggers to draw you another card, while Phyrexian Altar steps in to sacrifice that very same token for the exact mana needed to fuel Nadir Kraken's trigger all over again. By cycling the Tentacle through the Altar, you generate a self-sustaining loop that continually draws your deck and pumps your Kraken to astronomical heights.