#uncounterable spells

[magicjudge]

Spell Swindle has a ruling on it saying you still get treasures for uncounterable spells. Is the same true for Plasm Capture?

Yes, you'll still get mana. Plasm Capture's delayed trigger doesn't care if Plasm Capture countered the targeted spell, and so you'll get your mana as long as the spell was still a legal target when Plasm Capture resolved.