I decided to put every single card(Nymph's ability counting for the card with the same ability) that buffs itself or another card or both in a deck together. This is what happened.
Hover over cards for details, click for permalink
6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6qq 6u1 6u2 6u4 6u6 6u8 714 716 74a 74b 74i 779 77d 77f 77g 77m 77s 7ah 7an 7ap 7dr 7gq 7h2 7hi 7jr 7js 7ju 7jv 7kc 7mu 7n9 7nq 7q1 7q4 7t6 7tf 80b 80i 816 8pm
Reasoning on Fractal and no Aflatoxin/Death Nymph:
Fractal is considered a buff to cards like Fallen Druid who work best with as many friendly targets as possible. Aflatoxin was too slow to be worth including and is more of a debuff in most cases. In other cases it is a slower and weaker Fractal.
Oh, and Scarab was replaced by Pulverizer because this deck needs more permanent control and Scarab is usually bad in this deck.