Gaap the Divine Soldier [SS05-ENA10] Common SM216 or 1 card that specifically

or 1 card that specifically lists "Assault Mode Activate" in its text

you can Normal Summon 1 Level 4 or lower Sea Serpent-Type monster in addition to your Normal Summon/Set

Set: XY: Ancient Origins Type: Dragon Rarity: Holo Rare Retreat cost: Colorless

This card cannot be Special Summoned except by the effect of "Horus the Black Flame Dragon LV6"

Gaap the Divine Soldier [SS05-ENA10] Common SM216 or 1 card that specificallySet: Speed Duel: Twisted Nightmares Card type: Effect Monster Rarity: Common Attack: 2200 Defense: 2000 All monsters are changed to Attack Position, also their battle positions cannot be changed. (Flip Effects are not activated.) Once per turn: You can reveal any number of Fiend Type monsters in your hand; this card gains 300 ATK for each, until the end of this turn.