Ghostrick Stein

"Ghostrick Stein" can only be Normal Summoned while you control a face-up "Ghostrick" monster.

The monster effect "Once per turn, you can change this card to face-down Defense Position" is an Ignition Effect. (It does not target.)

The monster effect "When this card inflicts battle damage to your opponent: You can add 1 "Ghostrick" Spell/Trap Card from your Deck to your hand" is a Trigger Effect. (It does not target.)

The monster effect "You can add 1 "Ghostrick" Spell/Trap Card from your Deck to your hand" is an optional effect that can be activated after damage calculation when "Ghostrick Stein" inflicts battle damage to your opponent. (It can be activated not only when battle damage is inflicted to your opponent by battle between monsters, but also when battle damage is inflicted to your opponent by a direct attack.)

The monster effect "You can add 1 "Ghostrick" Spell/Trap Card from your Deck to your hand" can be activated not only when "Ghostrick Stein" inflicts battle damage to your opponent by its own attack, but also when an opponent's monster attacks "Ghostrick Stein" and "Ghostrick Stein" inflicts battle damage to your opponent because its ATK or DEF is higher than that of the opponent's monster.