Deckard Cain

3 XP: {t}: Create a Healing Potion token. (It's an artifact with "{2},{t}, Sacrifice this artifact: You
gain 3 life.")
7 XP: {2}, {t}: Search your library for an Gem
card, reveal that card, put it onto the battlefield tapped, then shuffle.
10 XP: {4}{u}, {t}: Deal 1 damage to any target.
Draw a card. Activate this ability only if you
control three Gem cards.