Instead of:
QUOTE
Always.
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Center location labeled VHP on Hero owned by Player at Anywhere.
Move 1 Spider Mine for Player at Anywhere to VHP.
Do:
QUOTE
Player brings Exactly 0 Hero to VHP.
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Center location labeled VHP on Hero owned by Player at Anywhere.
Move 1 Spider Mine for Player at Anywhere to VHP.
Assuming the "VHP" location is small, this should mostly solve both problems.