Blue Storm Cadet, Marios (BT15/040EN)

[AUTO]: Forerunner (When a unit of the same clan rides this unit, you may call this unit to (RC)) [AUTO](RC):When an attack hits a vanguard during the battle that this unit boosted, if you have an «Aqua Force» vanguard, and if it is the third battle of that turn or more, look at five cards from the top of your deck, search for up to one card with "Maelstrom" in its card name from among them, reveal it to your opponent, put it into your hand, and shuffle your deck.