You own them, correct? Because there would be no other reason for such a self interested removal of DAO assets to return zero value. I get it you have an asset you want it burned so it is artificially inflated. The only problem that is done at the expense of the DAO. Read the comment above to understand the context of how much SPS that is for the DAO to take in. And BTW the amount of SPS taken in would be colossal in the magnitude in an ingoing quantity could pack the DAO with SPS in a major way. But we're concerned about "Muh Riftwatcher card value." Sadly incredibly short sighted and self interest that smashes the game ongoing, unfortunate to hear.
RE: SPS Governance Proposal: Special Promotional Sale for Riftwatcher Packs