The Bottomfire Series

Name: Bottomfire's Alliance
Type: Equip Spell
Effect: Give equipped monster 700 ATK but it makes it lose 200 DEF. Also, it allows the player to special summon one monster with the same level or lower of the equipped monster from your deck. The summoned monster also gains 700 ATK and loses 200 DEF. If this card is destroyed, all attack and def return to their original value. Only one of this card can be activated at one time.

Name: Bottomfire: Knight of Eternal Flames
Type: Warrior/Synchro/Effect
Bottomfire: Kid of the beggining + 1 or more non-tuner fire monsters
Level 7
Attribute: Fire
Effect: When this card is synchro summoned, destroy all non-fire attribute monsters on the field. This card gains attack points equal to the combined total of the level of the monsters used to summon them times 1000.
Atk: 2500
Def: 0

Name: Bottomfire: Kid of the Beginning
Type: Warrior/Tuner
Level 4
Attribute: Fire
Effect: This card can only synchronize to summon, Bottomfire: Knight of Eternal Flames
Atk: 1500
Def: 300

Name: Axe of Riving Flames
Type: Equip Spell
Effect: If the equipped monster is not a fire attribute, change it's attribute to fire and increase it's attack by 500
If the equipped monster is a fire attribute, increase it's attack by 1500

Bottomfire's Plane of Eternal Flames
Type: Field Spell
Effect: Increase all monsters that have Bottomfire in their name ATK by 1000 and increase the attack of Fire Attribute Monsters by 500. Pay 500 LP each turn to keep this card on the field

Name: Bottomfire Witch
Type: Spellcaster/Effect
Level: 6
Attribute: Fire
Effect: Gains 300 ATK for each Monster with 'Bottomfire' in their name on the field or removed from play. If there aren't any monsters with 'Bottomfire' in their name on the field or removed from play, this card is destroyed.
Atk: 2300
Def: 1500

nice

Bottomfire's Staff of Fury
Type: Equip Spell
Effect: Take 1000 points of damage. Increase the attack of the equip monster by 1500.

Name: Bottomfire's Overlord Dragon
Type: Dragon/Ritual/Effect
Level 12
Effect: This card can only be ritual summoned by the effect of the ritual spell card, 'Bottomfire's deal with the devil'. When this card is summoned succsefully, You can summon every card with Bottomfire in there name in your hand or graveyard. This card cannot be destroyed by Spell, Trap, and monster effects. Also this card cannot be destroyed by monsters that are either Fire or Dark attribute.
Attack: 9000
Defense: 6000

Name: Bottomfire's Deal With the Devil
Type: Ritual Spell
effect: Pay 1000 LP to activate this card. Discard or tribute cards equal to 12 stars in order to summon Bottomfire's Overlord Dragon.

not bad