Infernal Spiked Mine

The Infernal Spiked Mine is the first example of a Crafted Item. Its recipe can be gotten by using Road Spikes 500 times, using Pineapples 500 times, and using Lava 300 times. The recipe is: It's just like a Spiked Mine, except that after it explodes, the explosion will stay a bit longer then disappear after 4 secs, burning every bloons that pass through it.
 * 2 Road Spikes
 * 2 Pineapples
 * 2 Lava

About appearance, it's just a Spiked Mine with a red body (instead of black) and little flames on the spikes.