March of the Monarchs

Continuous Spell

Tribute Summoned monsters you control cannot be targeted by, or destroyed by, card effects. You cannot Special Summon monsters from the Extra Deck.

Rulings – Yugipedia

Printings:

Cosmo Blazer: CBLZ-EN064 (Common) - 2013-01-25
Emperor of Darkness Structure Deck: SR01-EN025 (Common) - 2016-01-28
Egyptian God Deck: Slifer the Sky Dragon: EGS1-EN027 (Common) - 2021-06-17

Prices:

Cardmarket: 0.16 €
TCGplayer: $ 0.18