Carl, Mining Robot

Double strike
Carl, Mining Robot enters the battlefield with 3
gadget counters on it.
{t}, Remove a gadget counter from Carl, Mining
Robot; Carl, Mining Robot fights target creature
opponent controls, or phases out until end of turn.
"Carl is a mining robot who's fascinated by rocks
and stones of all kinds. Don't let him get started
on his latest obsession: the effects of Gems!"