Shield of the Righteous 

Artifact — Equipment
$0.23 #24854 0.36 17.5 years
Equipped creature gets +0/+2 and has vigilance.
Whenever equipped creature blocks a creature, that creature doesn't untap during its controller's next untap step.
Equip 
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Cleric of Chill Depths84%
$0.21↓#236060.15↓6.1 years↓
"Whenever this creature blocks a creature, that creature doesn't untap during its controller's next untap step."
Labyrinth Minotaur84%
$0.11↓#30464↓0.3331.1 years↑
"Whenever this creature blocks a creature, that creature doesn't untap during its controller's next untap step."
Barrow-Blade82%
$0.25↑#7215↑0.313.3 years↓
"Whenever equipped creature blocks or becomes blocked by a creature, that creature loses all abilities until end of turn."
+2 more matching lines
Wall of Frost82%
$0.20↓#4932↑0.67↑17.3 years
"Whenever this creature blocks a creature, that creature doesn't untap during its controller's next untap step."
True-Faith Censer79%
$0.08↓#206970.00↓10.5 years↓
"Equipped creature gets +1/+1 and has vigilance."
+1 more matching line
Accorder's Shield78%
$0.18↓#6449↑0.00↓16.1 years↓
"Equipped creature gets +0/+3 and has vigilance."
+1 more matching line
Kor Halberd78%
$0.27↑#15305↑0.00↓3.5 years↓
"Equipped creature gets +1/+1 and has vigilance."
+1 more matching line
Mesmerizing Benthid78%
$0.52↑#14727↑0.00↓7.7 years↓
"When this creature enters, create two 0/2 blue Illusion creature tokens with "Whenever this token blocks a creature, that creature doesn't untap during its controller's next untap step.""
Mace of the Valiant77%
$0.27↑#9023↑0.11↓7.0 years↓
"Equipped creature gets +1/+1 for each charge counter on this Equipment and has vigilance."
+1 more matching line
Vertigo Spawn77%
$0.07↓#268530.3120.7 years↑
"Whenever this creature blocks a creature, tap that creature. That creature doesn't untap during its controller's next untap step."
Dead-Iron Sledge76%
$0.23#19787↑0.4323.0 years↑
"Whenever equipped creature blocks or becomes blocked by a creature, destroy both creatures."
+1 more matching line
Avacyn's Collar76%
$0.22↓#19317↑0.07↓14.7 years↓
"Equipped creature gets +1/+0 and has vigilance."
+1 more matching line
Ring of Thune75%
$0.18↓#10012↑0.05↓14.3 years↓
"Equipped creature has vigilance."
+1 more matching line
Noble Stand74%
$0.09↓#287880.09↓26.7 years↑
"Whenever a creature you control blocks, you gain 2 life."