Ureni, the Song Unending is Dragonlord Atarka, but bigger and more resilient
Sure, giving your creatures +1/+1 is good, and can certainly help push some bonus damage, but it might not be enough to overcome an established board
Can You Delve for Colored Mana
Their death was shown on Puncturing Blow, which is fitting since thats one of the few cards in that set that could permanently deal with the insect gods
Hence why I didn't over-commit and why I made it black and white so that other reanimation strategies could work if you weren't devoting entirely to phoenixes
A few that spring to mind immediately are Rancor for Trample, Curiosity for extra draw, and Slagwurm Armor for a huge toughness boost