Protective Bubble {3}{U}
Enchantment — Aura
Enchant creature
Enchanted creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.