Entangle Terrain

An Ordinary Aura of trammeling roots

Foil

Booster

Printings

Minions occupying affected sites lose Airborne and are Immobile. Lasts 3 of your turns.

Market

$8.61

Low

$5.69

Median

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Does this affect subsurface units, as well as surface?

Yes, since it doesn't say 'atop.' Note that it doesn't affect minions in the void, since the void isn't a site.