Turnabout 
Instant
$0.22 #4191 0.45 27.9 years
Choose artifact, creature, or land. Tap all untapped permanents of the chosen type target player controls, or untap all tapped permanents of that type that player controls.
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Twiddle84%
$0.20↓#7774↓0.3833.1 years↑
"You may tap or untap target artifact, creature, or land."
Twitch83%
$0.14↓#9100↓0.22↓28.9 years
"You may tap or untap target artifact, creature, or land."
Jolt82%
$0.17↓#16910↓0.12↓29.9 years↑
"You may tap or untap target artifact, creature, or land."
Elder Druid78%
$0.23↑#26175↓0.06↓31.3 years↑
"
, 
: You may tap or untap target artifact, creature, or land."
, : You may tap or untap target artifact, creature, or land."
Trickster Mage76%
$0.23↑#22187↓0.29↓26.6 years↓
", , Discard a card: You may tap or untap target artifact, creature, or land."
, , Discard a card: You may tap or untap target artifact, creature, or land."
Sands of Time74%
$3.92↑#21402↓1.09↑29.6 years↑
"At the beginning of each player's upkeep, that player simultaneously untaps each tapped artifact, creature, and land they control and taps each untapped artifact, creature, and land they control."
Mind Over Matter74%
$47.30↑#7911↓1.01↑28.2 years
"Discard a card: You may tap or untap target artifact, creature, or land."
Teferi, Who Slows the Sunset73%
$4.20↑#45600.534.9 years↓
"+1: Choose up to one target artifact, up to one target creature, and up to one target land. Untap the chosen permanents you control. Tap the chosen permanents you don't control. You gain 2 life."
Opposition72%
$0.44↑#6174↓0.87↑27.2 years
"Tap an untapped creature you control: Tap target artifact, creature, or land."
Nature's Chosen72%
$3.87↑#7336↓0.24↓30.2 years↑
"Tap enchanted creature: Untap target artifact, creature, or land. Activate only if enchanted creature is white and untapped and only once each turn."
Hyperion Blacksmith71%
$2.15↑#31613↓0.26↓32.3 years↑
": You may tap or untap target artifact an opponent controls."
: You may tap or untap target artifact an opponent controls."
Breaking Wave70%
$0.68↑#22373↓0.81↑25.9 years↓
"Simultaneously untap all tapped creatures and tap all untapped creatures."