Protective Bubble 

Enchantment — Aura
$0.28 #12863 0.50 19.0 years
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 similar to Protective Bubble 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.
Whispersilk Cloak94%
$2.23↑#333↑0.5722.7 years↑
"Equipped creature can't be blocked and has shroud."
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"Enchanted creature has shroud as long as its controller controls another creature."
+1 more matching line
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$0.18↓#15672↓0.20↓21.7 years↑
"Target creature gains shroud until end of turn and can't be blocked this turn."
Zephid's Embrace84%
$0.17↓#17618↓0.00↓28.0 years↑
"Enchanted creature gets +2/+2 and has flying and shroud."
+1 more matching line
Spectral Cloak82%
$5.17↑#29707↓0.29↓32.4 years↑
"Enchanted creature has shroud as long as it's untapped."
Tricks of the Trade81%
$0.18↓#18776↓0.12↓14.3 years↓
"Enchanted creature gets +2/+0 and can't be blocked."
Tortoise Formation80%
$0.13↓#24255↓0.25↓18.0 years
"Creatures you control gain shroud until end of turn."
Rime Transfusion78%
$1.18↑#15577↓0.25↓20.2 years↑
"Enchanted creature gets +2/+1 and has "
: This creature can't be blocked this turn except by snow creatures.""