Decendents' Path

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.
"Come on, Boy, show'em you can do more with
that hammer!" -Max Thompson Sr's last words