Quantum Defender Blaster

equipped creature gets +4/+4 and reach and "whenever this creature attacks choose one"
• tap target creature opponent controls
• double the attacking creature's power of equipped creature during battle
I need more quantum power-Transform artifact for {x} rounds where {x} is mana paid
to transform Quantum defender blaster to Quantum defender Blade mode
and put it on the battlefield to previously equipped creature you control at the end of x rounds place quantum defender blade mode in library and