Karbex, the Brine Behemoth

Vigilance, Reach, Islandwalk
Whenever Karbex, the Brine Behemoth blocks a
creature, if there are fewer than two creatures
with Pincer counters in play, you may pay {2}{u}. If you do, put a Pincer counter with "This creature cannot become untapped."
You may have combat damage that would be
dealt to Karbex, the Brine Behemoth on
creatures with Pincer counter on them instead.