[App Fusion] [Revivemon] & [Biomon]: Cost 0
If 2 such cards are linked together, stack the link card on top and digivolve.
<Overclock ([Appmon] Trait)> <Link +1>
[When Digivolving] You may play 1 level 4 or lower [System] or [Life] trait Digimon card from your trash without paying the cost. Then, you may link 1 [Appmon] trait Digimon card from your hand or this Digimon's digivolution cards to 1 of your Digimon without paying the cost.
[All Turns] [Once Per Turn] When other Digimon are deleted, you may activate 1 of this Digimon's [When Digivolving] effects.
Rulings Q&A — 2 entries
Q1Q5659
Can I use this card's [When Digivolving] effect to link a card that doesn't have <Link>?
All of my Digimon get -5000 DP. I used this card's [When Digivolving] effect to play a Digimon with 5000 DP or less. At such times, is the played Digimon deleted before the part of the effect after "then"?
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Official Ruling
No, it isn't deleted yet. Once all of the processing for this card's [When Digivolving] effect is resolved, then all of the Digimon with 0 DP are deleted at the same time.