User blog comment:Texas Snyper/Item Synergy List and Similar Items Clean-up Project/@comment-569195-20110407090756

Since we are talking about item synergies i think you need to go beyond role.

Mana hungry champs: Champs with spam able abilities, toggled powers that drain mana or low mana pools that need a big chunk of MP5 or large mana items. Amumu, Sona, Anivia, Taric, Tier of the Goddess, Chalice of Harmony, Philosophers stone.

Champions with abilities that apply on-hit effects. Gangplank, Miss fortune, Ezreal, Trinity Force, Tiamat, Wit's End, Executioner's Calling.

Champions that get extra bonus for a specific stat: Rammus and Armor, Singed and Mana, Jax and AP/AD. This extra bonus may make some normally good items great for these champions.