Mana Potion

Mana Potion comes into play with 5 dose
counters on it.
{1},{t}, Remove a dose counter: You may play an additional land this turn.
{5}{g/u}{g/u}, Remove 5 dose counters:
Untap all lands you control. If any source adds
mana to your mana pool, it adds that much plus
one until the end of the turn. Exile Mana Potion.