[Guard] (When any of your other Digimon would leave the battle area by your opponent's effects, by deleting this Digimon, they don't leave.)
[On Play] [On Deletion] [De-Digivolve 1] 1 of your opponent's Digimon.

[All Turns] [Once Per Turn] When this Digimon would leave the battle area other than by your effects, by deleting 1 of your other Digimon with [Knightmon] in its text, it doesn't leave.