Chimeratech Rampage Dragon

When Chimeratech Rampage Dragon enters the battlefield, destroy up to three target non-creature
non-land permanents.
{1}{c}, Send up to two artifact creatures from your library to your graveyard, then when this card attacks, untap this attacking creature, then this
card can attack again. This can be done a number
of times equal to the number of creatures sent to
the graveyard by this ability. Activate this ability
only as a sorcery and only once per turn.