Mournful Reflection

As Mournful Reflection enters the battlefield, choose a nonland card type.
(The nonland card types are artifact, creature, enchantment, instant, planeswalker, sorcery, and tribal.)
Spells you cast of the chosen type cost {2} more
to cast and have delve. (Each card you exile from your graveyard while casting those spells pays for {1}.)