Dewloren, Tiger King of the Ice Barrier – (Hidden Arsenal Chapter 1) – (HAC1-EN052) – (DT Ultra Rare)

1 Tuner + 1 or more non-Tuner WATER monsters
Once per turn, you can return any number of face-up cards you control to the owner’s hand. For each card returned to the owner’s hand by this effect, this card gains 500 ATK until the End Phase.