You can activate "Battle Mania" with this card so that you don't have to pay the Life Point cost and still do damage your opponent.
An effective combo using this card is to combine it with "Healing Wave Generator". That way you can gain back 1000 Life Points because it is a Level 10 monster and then pay the Life Points you just gained to attack.
Equip "Raregold Armor" to this card to protect "Commander Covington" and other monsters (like "Healing Wave Generator" for the above strategy) with this powerful card.
You can take advantage of the 1000 Life Point cost by equipping this card with "Megamorph" for a 9200 ATK monster.
If you also have "Limiter Removal" you could make it an 18,400 ATK monster for a turn.
If you're looking for quantity instead of quality, use this cards effect to Summon back the three "Machinas", then use cards like "Gaia Power", "Solidarity", "United We Stand" and "Limiter Removal" for best results.
Activate "Future Fusion" while "Phantom of Chaos" and "Commander Covington" are on the field. send the three "Machina" monsters and "Machina Force" to the graveyard. Activate the effect of "Phantom of Chaos" by banishing "Machina Force" and revive the three "Machinas". Then activate the effect of "Commander Covington" for a fast summoning of "Machina Force".