Once per turn, during either player's Battle Phase: You can target 1 other Warrior-Type monster you control; this card loses exactly 600 ATK, and if it does, that monster gains 600 ATK. When this card you control is destroyed by your opponent's card (either by battle or by card effect) and sent to your Graveyard: You can banish this card from your Graveyard, then target 1 FIRE Warrior-Type monster in your Graveyard; Special Summon that target.
One of the special summonable monster from the Swordsman's effect. Even if your deck does not contain a lot of normal monsters, being able to special summon a 2100 attack monster after it gets destroyed will prevent you from being defenseless.
Special summon Phoenix Gearfried will let you normal summon it on your next turn, enabling its effects right away. Can be very strong if you can send Phoenix Gearfried to the graveyard early, and your deck has many equip cards to make good use out of his effects.
The Gearfried I'm talking about is the 4* Gearfried. Activate effect on your turn to make Gearfried ATK 2400, then on opponent's battle phase activate it again to raise Gearfried's ATK to 3000. If its somehow survive, you can use it once again for 3600 ATK beater