Dendrerpeton

When Dendrerpeton enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)
{b}: Regenerate Dendrerpeton.
Dendrerpeton are generally found associated with hollows of the Lepidodendron and Sigillaria tree genera, for which their fossils are contained within