Steps to Reproduce
Play Urza’s Incubator naming Eldrazi.
Try casting Idol of False Gods.
Expected Result
Urza’s Incubator only affects creature spells. Idol of False Gods costs 2 mana to cast.
Actual Result
Idol of False Gods costs 0 mana to cast.
This is also the case for Echoes of Eternity.
I don’t know if it only affects permanent Kindred spells or also Instants or Sorceries.
Play Urza’s Incubator naming Eldrazi.
Try casting Idol of False Gods.
Expected Result
Urza’s Incubator only affects creature spells. Idol of False Gods costs 2 mana to cast.
Actual Result
Idol of False Gods costs 0 mana to cast.
This is also the case for Echoes of Eternity.
I don’t know if it only affects permanent Kindred spells or also Instants or Sorceries.