Burrow

Burrow is a unit ability that removes the unit from the board and places it in reserve.

Rules

1. A unit with Burrow may use this ability during its activation instead of moving or attacking.
2. The unit is removed from the board and placed face-down in its controller's reserve area.
3. A burrowed unit may return to the board on any future activation, placed in any valid position within its movement range of where it burrowed.

Notes

• A burrowed unit cannot be targeted by attacks or abilities while in reserve.
• Placeholder — add any interactions or edge cases here.