A Fire Fist deck as pure as possible. Wolfbark can be used for an easy Tiger King or Eagle, the Tri-brigade link monsters can add field presence, recycling and removal as well as being easy to bring out (as long as you not locked into only Fire Fist monsters) and Heraklinos can be summoned by the field spell's 10 counter effect.
This deck can plus like crazy, has a lot of combo potential and Eagle's continuous effect is at some point busted. However, if you want a more competitive approach, I recommend testing with a full Tri-brigrade engine.