Omen Machine prevents the active player from drawing a card, and causes them to exile the top card of their library, and cast that card if its a spell without paying its mana cost, or put it onto the battlefield if it's a land.
If an opponent casts a spell this way,
Void Mirror triggers, countering that spell.
Results
All spells opponents cast using
Omen Machine are countered.
Players can't draw cards.
Metadata
Lock
Locks your opponents out of taking some actions.
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
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1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.