This mechanic is directly tied to the brand-new co-operative game mode that will be released in the Illuneers Quest: Deep Trouble box alongside Ursulas Return
Stay safe folks, and see you next time
Kefka takes things a bit further by giving you access to black in your deck, though, giving you access to creature reanimation and tutoring straight for a Niv-Mizzet to combo out quickly
Considering the deck's "go wide" approach, it's not uncommon to get several explore triggers per turn, churn through your deck, and build a hard-to-deal-with board all at once
For each of those cards, pay 4 life or put the card on top of your library. In essence, rather than drawing one card, you get to draw three then pick the one you want the most out of the bunch and keep it for free, or choose to draw more cards by paying some life
It even goes infinite with cards like Duskmantle Guildmage