Sadly its just white and green
If the target creature's power is increased to 3 or greater after Deserter's Disciple's ability is activated but before it resolves, the ability doesn't resolve
However, it does provide you with another Creature to benefit from the five-mana Enchantment portion of the card, which is where the real power lies
I Meld Meld is a mechanic that Ive been intrigued by since it was first introduced but have struggled to implement satisfyingly to this point
Heres a quick cheat sheet: Modern: Clean, current layout
Unlike Silent Gravestone, the secondary mass exile ability is also quite cheap, so even if its front side isn't always going to prove the most useful in every situation, it's far easier to utilize the back half instead