The Furnace, Light of Survival

If The Furnace have 10 or more fuel counters at the end of your turn, destroy The Furnace. Destroy all non-land permanents you control.
{r}{1}: Remove one fuel counter from The Furnace
{r}{r}{x}: Add {x} fuel counters to The Furnace: Untap {x} target creatures you control
{r}{r}{5}: Add 9 fuel counters to The Furnace: All creatures you control get +3/+3 until your next turn

"The Furnace keeps us all alive. Without it, the city will not survive" - City Master