The Vessel Tree

At the beginning of your main phase, you
may pay 1 life and reveal the top card of
your library. If it's a creature card, add {c}. If it's an enchantment card, add {w}. If it's an artifact card, add {u}. If it's a sorcery card, add {b}. If it's an instant card,
add {r}. If it's a land card, add {g}. If it's a planeswalker card, add one mana of any
color.