(Written Cac Single Card) gains ATK based of combine levels of all monsters in all GY?

[Phelphor, of the Deep]

Ready for some creative and crazy cool effects on an unique boss monster? Me too!

Kahvel Siege Lord

Level 8 synchro monster

Light Warrior

200 ATK

3000 DEF

1 tuner + 1 or more non-tuner monster

This card can only be Special Summon by Synchro Summoning or This card's effecf. This card gains ATK equal to the combine levels of all monsters in both player's GY x 100. If this card's ATK is lower than this card's DEF, this card can not be destroyed in battle or card effects. If you have no Spell or Trap cards in your GY, this card can not be targeted by your opponent's card's or card effects. If your opponent has 10 or more banished face-down cards, this card gain 1000 DEF. (Quick-Effect:) once per turn, you can banish 3 cards from your GY face-down and if you do; you can banish up to 5 cards from your GY and/or your Opponent's GY face-down. If this card you control is sent to the GY, you can send all monsters from your Deck (minimum of 1) to the GY and if you do; Special Summon this card from your GY. You can only activate each effect of "Kahvel Siege Lord" once per turn. You can only control 1 face-up "Kahvel Siege Lord".