Nautical Cartographer

Whenever you remove two or more travel
counters from Nautical Cartographer, return
it to the battlefield under your control.
When you do, target creature can't be blocked
this turn.
{u}, {t} : Nautical Cartographer travels. (Exile this
card with a travel counter on it. At the beginning of
your upkeep, put a travel counter on it or remove all
travel counters from it.)