Red Sun over Paradise

({p/r} can be paid with either {r} or 2 life)
You must pay 2 life to play this card.
All basic lands become mountains
Scorch (for every 5 mana any player uses,
[5, 10, 15, Etc.] that player loses 1 life)
"When the wind is low, And the fire's hot,
The vulture waits to see what rots."
-Sundowner