[When Evolving] You can play 1 Blue LV3 Digimon or 1 LV4 or below Digimon card with traits containing [Aquatic] from 1 of your Blue Digimon's evolution sources without paying its cost. Then, you can place 1 Blue Digimon card from your hand to the bottom of this Digimon's evolution sources
EVO SOURCE EFFECT
[Both Turns](once per turn) When your Digimon is played from evolution sources, you can return 1 of your opponent's Digimon of the same LV to the bottom of their deck