At the beginning of your upkeep, reveal the top card of your library. If it's a creature card that shares a creature type with a creature you control, you may cast it without paying its mana cost. If you don't cast it, put it on the bottom of your library.
![Descendants' Path [The Lost Caverns of Ixalan Commander]](http://tothetablebgc.myshopify.com/cdn/shop/files/a2ad7482-8ce2-4e63-8be7-79c2e37d3006.png?v=1776700329&width=1445)
