The condition will be met if this effect is activated after being triggered by Digimion being played by <Decode>. The condition won't be met if this effect is activated after being triggered by digivolution or by Digimion being played by a method other than <Decode>.

The playing and digivolving both trigger this card's [All Turns] effect. The "if played by <Decode>" condition won't be met if this effect is activated after being triggered by digivolution, but it will be met if this effect is activated after being triggered by the Digimon being played by <Decode>.