Omnath, Locus of the Void is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Omnath gets +1/+1 for each unspent mana you have. If you would lose unspent mana, that mana becomes colorless instead. Landfall — Whenever a land you control enters, add.
Complete guide
Omnath, Locus of the Void is a powerful elemental that transforms your mana pool into a persistent reservoir and a source of raw power. By changing how unspent mana behaves and rewarding land drops, it ensures your resources grow exponentially as the game progresses.
Mastering the Mana Pool
The core of this card lies in its second ability, which prevents unspent mana from being lost as steps and phases end. Instead of disappearing, your mana becomes colorless and remains in your pool indefinitely while Omnath is on the battlefield. This allows you to accumulate massive amounts of energy over several turns to cast expensive spells.
Landfall and Power Scaling
Whenever a land enters the battlefield under your control, Omnath triggers its Landfall ability to add two colorless mana to your pool. This mana immediately contributes to Omnath's first ability, giving it a +1/+1 bonus for every point of unspent mana you currently hold. This makes Omnath both a massive combat threat and a ramp engine.
Common Mistakes and Restrictions
It is crucial to remember that if Omnath leaves the battlefield, your unspent mana will disappear at the end of the current step or phase. Additionally, if the mana you added had specific restrictions (such as mana that can only be spent on artifacts), those restrictions remain even after the mana becomes colorless through Omnath's effect.
Interaction examples
Step 1: You have Omnath on the field and play a land. Landfall triggers, adding two colorless mana to your pool. Step 2: Because of Omnath's ability, this mana doesn't vanish when you move to your combat phase. Step 3: On your next turn, you play another land, adding two more mana. You now have at least four colorless mana. Step 4: You use this stored mana to help pay the cost for Myr Battlesphere, which enters and creates four Myr tokens.
Step 1: Over two turns, you accumulate seven colorless mana in your pool by playing lands and passing the turn while Omnath is in play. Step 2: Omnath is currently at least an 8/8 creature because of the seven unspent mana. Step 3: During your main phase, you spend all seven colorless mana to cast Meteor Golem. Step 4: Meteor Golem enters the battlefield and destroys a nonland permanent. Note that Omnath's power decreases as you spend the mana.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Omnath, Locus of the Void
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
As long as Omnath, Locus of the Void remains under your control, you'll retain unspent mana as steps and phases end, although that mana will become colorless. This means you can add mana and spend it during a future step, phase, or turn. Once Omnath leaves your control, you'll have until the end of the current step or phase to spend the mana before it is lost.
No other card is named in this ruling.
- #2· Wizards of the Coast
If unspent mana you have has any restrictions or riders associated with it (for example, if it was produced by Jeweled Lotus), those restrictions or riders remain associated with that mana when it becomes colorless.
No other card is named in this ruling.
Legal formats
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Meta decks with Omnath, Locus of the Void
No archived Top 8 deck with this card yet.



Myr Battlesphere
Meteor Golem