Inner Sanctum {1}{W}{W}
Enchantment
Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Prevent all damage that would be dealt to creatures you control.
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Cards that do something similar expected a card that isn't here?
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Rune-Tail, Kitsune Ascendant // Rune-Tail's Essence 100%
$4.81#7387
"Prevent all damage that would be dealt to creatures you control."
Iroas, God of Victory 91%
$12.79#1467
"Prevent all damage that would be dealt to attacking creatures you control."
Mark of Asylum 89%
$1.52#16376
"Prevent all noncombat damage that would be dealt to creatures you control."
Emmara Tandris 87%
$0.34#11481
"Prevent all damage that would be dealt to creature tokens you control."
Crystal Fragments // Summon: Alexander 85%
$0.18#7674
"Prevent all damage that would be dealt to creatures you control this turn."
Blessed Sanctuary 84%
$4.39#5853
"Prevent all noncombat damage that would be dealt to you and creatures you control."
Tajic, Legion's Edge 83%
$0.50#7741
"Prevent all noncombat damage that would be dealt to other creatures you control."
Crystal Barricade 83%
$1.52#2103
"Prevent all noncombat damage that would be dealt to other creatures you control."
Obscuring Haze 81%
$4.56#1513
"Prevent all damage that would be dealt this turn by creatures your opponents control."
Thwart the Enemy 81%
$0.13#14117
"Prevent all damage that would be dealt this turn by creatures your opponents control."
Light of Sanction 80%
$0.41#22892
"Prevent all damage that would be dealt to creatures you control by sources you control."
Safe Passage 80%
$0.16#10745
"Prevent all damage that would be dealt to you and creatures you control this turn."
Bringer of the Black Dawn 80%
$1.60#14528
"At the beginning of your upkeep, you may pay 2 life. If you do, search your library for a card, then shuffle and put that card on top."