White Cleric, Bronze Fighter, and Strifefire

[Just Crouton]

...

White Cleric
*7
LIGHT
Spellcaster/Effect
ATK 2500
DEF 2100
Effect: You can discard 1 LIGHT Spellcaster-type monster to Special Summon this card from your hand in face-up Attack Position. You can remove from play 2 LIGHT Spellcaster-type monsters from your Graveyard to Special Summon this card from your Graveyard in face-up Defense Position. By discarding 1 Spell Card, you can select up to 2 face-up DARK monsters on the your opponent's side of the field and destroy them.

Bronze Fighter
*7
EARTH
Warrior/Effect
ATK 2500
DEF 2100
Effect: You can remove from play 1 Level 4 or lower Warrior-type monster from your side of the field, hand, or Graveyard to Special Summon this card from your hand or Graveyard. Once per turn, when a Level 4 or lower Warrior-type monster you control attacks a monster with a higher Level, that monster gains 500 ATK x the difference in Levels (during that battle only).

Strifefire
*8
FIRE
Pyro/Effect
ATK 2700
DEF 2300
Effect: This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play any 3 Pyro-Type monsters in your Graveyard. When this card destroys a monster by battle, look at your opponent's hand and inflict 700 damage for each Monster Card in their hand.

[Zeppeli Gyro Supreme]

White Cleric combos well with itself. Especially if there is already one in the grave. With its Special Summon effects, I think its destruction effect is a bit too powerful.

Bronze Fighter has pretty much the same problem. If you toned down its increase to like 200 x and made it Summonable by its effect only from the Grave, then I think it would be good.

Strifefire sounds pretty awesome. Overall, good job.