Drake Whelp

{2}{u}, Reveal Drake Whelp from you hand: Mature Drake Whelp. Activate this ability only
during your turn. (To mature Drake Whelp, exile it.
If you do, search your library for a non-Young creature card that shares a creature type with it. You may cast it by paying the difference in mana costs between it and this creature. Shuffle your library.)
If Drake Whelp deals combat damage to a player, you may draw a card and mature it.