Parker Barrows High Noon and Stick Up

[Virtus]

1) Stick Up and High Noon have effects which allow the opponent to discard soulstones. Can only Masters and Henchmen choose to do this, or can any model do so as long as there are soulstones in the cache?

2) In regards to Stick Up, can my opponent choose to evade the four damage by giving up a stone that they don't have?

[solkan]

1 hour ago, Virtus said:

1) Stick Up and High Noon have effects which allow the opponent to discard soulstones. Can only Masters and Henchmen choose to do this, or can any model do so as long as there are soulstones in the cache?

Any model can discard soul stones.  Discarding a soul stone isn't "using" the soulstone, so it's not limited by those rules.  Note that Stick Up coincidentally restricts the target to Enforcers, Henchmen and Masters, but it's just a coincidence as far as the ability to discard stones goes.  (I'm not finding the card that High Noon is on at the moment, so no comment on that wording.)

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2) In regards to Stick Up, can my opponent choose to evade the four damage by giving up a stone that they don't have?

Because of the magic words "if able" in "must discard 1 Soulstone if able", yes, the model can avoid damage if there are no soulstones left.  It avoids the damage and you (the Parker Barrows controller) gain one soul stone even though no soul stone was discarded.