[IKO] Kinnan, Bonder Prodigy

[Protoaddict]

Mox Doubler, also makes your Lotus/LED tap sac for 4.

[BlindTherapy]

makes chromatic sphere/star, as well as the original odyssey eggs, mana neutral.

[Protoaddict]

Arcum's astrolabe becomes a snow sol ring that does not cost a card. There are a fair number of artifacts that benefit from this, though I don't think you need look too much further than what we already have.

Getting to 7 mana and using the activated ability can put emrakul or griselbrand into play. I have to believe putting Gris into play, drawing 14, then knowing all your mana rocks produce 2 has to be game over.

[Serracollector]

Infinite mana with basalt monolith. cute

[volrathxp]

Does not add to LED fyi, LED does not tap, it just sacrifices.

Also worth noting that it also does not add to Urza mana.