Omniscience
Enchantment
You may cast spells from your hand without paying their mana costs.
- CMC
- 10
- Mana cost
- Color identity
- U
- Rarity
- mythic
- Set
- Foundations
- Price
- $5.56
- EDHREC rank
- #1027
Omniscience turns your hand into an unlimited resource — every spell costs nothing, and a single draw effect after it resolves ends the game. Ten mana is a real cost, but commanders like Jhoira of the Ghitu can suspend it for free, collapsing that barrier entirely.
Best Commanders
Commanders with the highest synergy

Jhoira of the Ghitu
Jhoira of the Ghitu suspends Omniscience for two mana, meaning it hits the battlefield without ever demanding the full ten — the synergy score of 0.56 reflects just how cleanly these two cards form an engine together.

Narset, Enlightened Master
Narset, Enlightened Master attacks, exiles Omniscience off the top, and puts it into play for free — from that point, every subsequent hit off her trigger costs nothing to cast.

Neera, Wild Mage
When Neera, Wild Mage flings a spell into the stack and randomly hits Omniscience, the game frequently ends on the spot; the 0.46 synergy reflects how reliably that payoff justifies the slot.

Aminatou, Veil Piercer
Aminatou, Veil Piercer can blink Omniscience to reset any enters-the-battlefield triggers stapled to it, and the enchantment's raw effect pairs with Aminatou's top-deck manipulation to guarantee gas after it lands.
Jin-Gitaxias
Jin-Gitaxias fills your hand the moment it connects, and Omniscience means every card drawn off that trigger is a free spell — the two cards together convert a single combat step into a full win condition.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Omniscience is legal in every major Constructed format but almost never sees competitive play outside Commander — ten mana is simply too slow for Legacy, Modern, or Pioneer, where the game is often decided before you reach that threshold. In Commander, the calculus flips: slower games, ramp-friendly color identities, and powerful tutors make assembling ten lands or cheating Omniscience into play both realistic and backbreaking. Oathbreaker can support it in the right shell, but the 20-life starting total accelerates games enough that the payoff window shrinks. Standard-legal printings exist, but no Standard environment has ever been slow enough for Omniscience to matter competitively.
Key Combos
Combo lines featuring this card
Budget Alternatives
Cheaper options that do most of the same work
Rielle of the Reliquitae and other draw-payoff engines aside, the closest budget stand-ins for Omniscience are Dream Halls and Fist of Suns — both reduce spell costs to near zero in the right deck, though each comes with meaningful restrictions Omniscience ignores entirely. If the goal is simply "cast everything in hand for free," no card under a few dollars replicates that cleanly; the cheaper options trade universality for narrow conditions, which is the honest cost of budgeting away from Omniscience.
Price Context
Current price
$5.56 mid tier
At $5.56, Omniscience sits in a rare mid-price pocket for a card of its raw power level — multiple reprints have kept it accessible without pushing it to bulk. The price is stable; it's been reprinted enough times that another reprint is unlikely to crater it further, and demand from Commander keeps a firm floor under it.
Explore
Sources
Mentioned
- Jhoira of the Ghitu
- Narset, Enlightened Master
- Neera, Wild Mage
- Aminatou, Veil Piercer
- Jin-Gitaxias
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.