Vaegthos, The Cosmic Wrong

Vaegthos costs {1} less to cast for each permanent
you control with an odd converted mana cost.
Whenever you cast a spell with an odd converted
mana cost, put a fate counter on Vaegthos.
As long as there are 10 or more fate counters on
Vaegthos, you and permanents you control have
protection from even converted mana costs.