If I use this card's [On Play] effect to return a blue/green 2-color Digimon card from my opponent's trash to the bottom of the deck, what colors of level 4 or lower Digimon cards can I play using this effect?
Show ruling
You can play a level 4 or lower Digimon card that includes blue or green in any of its colors.
Source: EX10-068 Digimon Emperor