[On Play] By placing this Digimon under 1 of your other Digimon that's red or has [Legend-Arms] in its traits as its bottom digivolution card, you may reveal the top card of your deck. If that card is a Digimon card with [Legend-Arms] in its traits and a play cost of 7 or less, you may play it without paying its memory cost. Add the rest to your hand.