Noble Knight Brothers

The monster effect "(1): If this card is Normal Summoned: You can activate this effect; Special Summon up to 2 "Noble Knight" monsters from your hand. After this effect resolves, you cannot Special Summon monsters for the rest of this turn, except "Noble Knight" monsters." is a Trigger Effect. (This effect does not target.)

The monster effect "②: This card can only attack if you control 3 'Noble Knight' monsters" is a Continuous Effect.

You can only attack if the only monsters you control are 3 face-up "Noble Knight" monsters. Even if you control 3 face-up "Noble Knight" monsters, you cannot attack if there are also face-down monsters present.

The monster effect "③: Once per turn, you can target a total of 3 'Noble Knight' cards and/or 'Noble Arms' cards in your GY; shuffle them into the Deck, then draw 1 card" is an Ignition Effect. (You activate this effect by targeting a total of 3 cards from your GY that are either "Noble Knight" cards or "Noble Arms" cards. The process of shuffling the targeted cards into the Deck and the process of drawing 1 card do not happen simultaneously.)