2 Level 4 monsters
When your opponent activates a card or effect: You can detach up to 3 different types of materials from this card (Monster, Spell, and Trap), then apply the following effect(s) depending on what was detached, in sequence. • Monster: This card gains 400 ATK. • Spell: Take control of 1 face-up monster your opponent controls until the End Phase, but it cannot declare an attack nor activate its effects this turn. • Trap: Negate the effects of 1 Effect Monster on the field until the end of this turn.
You can only use this effect of "Time Thief Double Barrel" once per turn.