I think 123s needs some kind of nerf with stuff it could pull out especially with Blitz unit and how instant convert seems to have some questionable quirk with "when deployed do X" units
First option is changing text to "At the end of your turn, Convert into the last unit you deployed this turn".
Second option, might be too severe imo, is give it Smokescreen and convert at the end of enemy turn instead of own turn.
I know this decision might be unpopular. You can voice your opinion here.
