From the Dark Mastery pool for defenders:
Endoplasm Exposure - Accuracy and Mez
APP - Defender - Oppressive Gloom
Ribosome Exposure - Increase Damage Resistance and Endurance Reduction
APP - Defender - Dark Embrace
Membrane Exposure - Increase ToHit and Defense Buffs, and Increase Attack Rate
APP - Defender - Soul Drain
Cytoskeleton Exposure - Increase ToHit and Defense Buffs, and Endurance Reduction
APP - Defender - Dark Embrace