Spring Cleaning

Destroy target enchantment. Clash with an opponent. If you win, destroy all enchantments your opponents control. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)

Yavimaya Enchantress

This creature gets +1/+1 for each enchantment on the battlefield.

Naturalize

Enchanted Evening

All permanents are enchantments in addition to their other types.