I'm a noob to these forums, so if this belongs elsewere, please move it. Thnx.

My question:
The ability Flame Body, has the field ability to hatch pokemon in half the time (5000 steps to 2500 steps). If I have two or more pokemon with flame body, are the effects cumulative? IOW, with two Magcargo, will 5000 steps be reduced to 1250?

I don't think the effects are cumulative...and don't forget it only works on Emerald

Flame Body just doesn't work on Emerald. I use it all the time on Diamond. To answer your question : No, it doesn't add up...trust me. Another ability you might try is Magma Armor.

Yeah, there's a question: Will Magma Armour and Flame Body work together to halve it twice?

1.) It works in emerald, diamond and pearl (it works for me)
2.) It is cumulative
3.) 2 flame bodies and 3 magma armors = 5 flame bodies = 5 magma armors. It is interchangable.