Steve, Stalwart Babysitter

Friends forever
Double Strike
When Steve attacks, you may sacrifice an artifact.
If you do target creature gains indestructible until
end of turn and Steve gains
lifelink until end of turn.
{t}, Sacrifice 6 clues; Untap all creatires that
attacked this turn. After this main phase, there is
an additional combat step followed
by an additional main phase.