Curious Megasnail

Vigilance, Defender
{t}: Tap target vehicle and put a stun counter
on it. Curious Megasnail loses Defender until
the end of your next turn. ("If a permanent with
a stun counter on it would become untapped,
instead remove a stun counter from it")
"Captain Ramirez, ahem, we, umm, we ..."
"What is it this time? Giant Snail again?"
"No, no Sir, ahem, this time ... Megasnail."
Klaas - Doomed Snailor