D.va Mecha pilot

{1}{r/w}{r/w}Tap an untapped artifact you control:
D.va Mecha pilot gains +4/+4 until end of turn,
use this ability only once each turn.
{r}: D.va Mecha pilot deals damage equal to its
power to target creature or planeswalker.
{w}: Prevent the next 5 damage to any target,
use this ability only if D.va Mecha pilots power
is 5 or more.
Now that's teamwork!