Because of the way Kroxa and Kunoros' ability resolves, you can sacrifice it in response to the reanimation clause, sacrificing it to the Altar, to mill six cards and then exile five of them to return Kroxa and Kunoros to play, triggering its ability again in an infinite loop
The threat of it doing so does make your opponent more likely to trade with it though
Create an online draft lobby, invite your friends, choose the cube and format, then draft together in the browser
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The second is imprinting something extremely repetitive, such as a board sweeper, so that the game cannot move forward
The perfect introduction for new players, each deck also comes with a strategy insert to help you make the most of your deck's abilities and a reference card for what to do on your turn