Omniscience 
Enchantment
$5.87 #1028 1.60 14.3 years
You may cast spells from your hand without paying their mana costs.
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Cards similar to Omniscience expected a card that isn't here?
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Omnipresence88%
$2.35↓#18139↓0.56↓0.0 years↓
"You may cast spells with mana value less than or equal to the number of creatures you control from your hand without paying their mana costs."
Zaffai and the Tempests83%
$0.21↓#12086↓0.26↓0.5 years↓
"Once during each of your turns, you may cast an instant or sorcery spell from your hand without paying its mana cost."
Sram's Expertise82%
$0.61↓#6911↓0.17↓9.7 years↓
"You may cast a spell with mana value 3 or less from your hand without paying its mana cost."
Fires of Invention82%
$0.26↓#14793↓0.31↓7.0 years↓
"You can cast spells only during your turn and you can cast no more than two spells each turn."
Dracogenesis82%
$11.88↑#2217↓1.09↓1.5 years↓
"You may cast Dragon spells without paying their mana costs."
Yahenni's Expertise81%
$0.38↓#8753↓0.25↓9.7 years↓
"You may cast a spell with mana value 3 or less from your hand without paying its mana cost."
Maelstrom Archangel80%
$0.78↓#6571↓0.24↓17.7 years↑
"Whenever this creature deals combat damage to a player, you may cast a spell from your hand without paying its mana cost."
Baral's Expertise78%
$0.24↓#3852↓0.21↓9.7 years↓
"You may cast a spell with mana value 4 or less from your hand without paying its mana cost."
Rishkar's Expertise78%
$1.79↓#242↑0.54↓9.7 years↓
"You may cast a spell with mana value 5 or less from your hand without paying its mana cost."
One with the Multiverse78%
$2.16↓#2019↓0.68↓3.9 years↓
"Once during each of your turns, you may cast a spell from your hand or the top of your library without paying its mana cost."
Omnispell Adept76%
$0.22↓#19367↓0.00↓8.0 years↓
"
, 
: You may cast an instant or sorcery spell from your hand without paying its mana cost."
, : You may cast an instant or sorcery spell from your hand without paying its mana cost."
Cramped Vents // Access Maze76%
$0.30↓#7773↓0.22↓2.1 years↓
"Once during each of your turns, you may cast a spell from your hand by paying life equal to its mana value rather than paying its mana cost."
Kari Zev's Expertise76%
$1.48↓#6961↓0.27↓9.7 years↓
"You may cast a spell with mana value 2 or less from your hand without paying its mana cost."
Aluren76%
$93.75↑#9734↓1.44↓29.0 years↑
"Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash."
Counterlash76%
$0.27↓#16895↓0.28↓14.7 years
"Counter target spell. You may cast a spell that shares a card type with it from your hand without paying its mana cost."
Twinning Glass74%
$0.30↓#25921↓0.28↓19.0 years↑
"
, : You may cast a spell from your hand without paying its mana cost if it has the same name as a spell that was cast this turn."
, : You may cast a spell from your hand without paying its mana cost if it has the same name as a spell that was cast this turn."
Annoyed Altisaur74%
$0.15↓#3984↓0.09↓5.9 years↓
"Cascade When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order."
Maelstrom Colossus74%
$0.41↓#4540↓0.03↓5.9 years↓
"Cascade When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order."
Boarding Party74%
$0.21↓#7866↓0.22↓5.9 years↓
"Cascade When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order."
Enlisted Wurm74%
$0.12↓#19144↓0.44↓17.5 years↑
"Cascade When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order."