Mirrodin Besieged

Flying Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn.

Training Drone can't attack or block unless it's equipped.

{2}{G}: Regenerate Tangle Hulk.

{R}: Target creature can't block Spin Engine this turn.

Sacrifice an artifact: Regenerate Rusted Slasher.

Metalcraft — Razorfield Rhino gets +2/+2 as long as you control three or more artifacts.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

When Peace Strider enters the battlefield, you gain 3 life.

Flying

{2}{B}: Dross Ripper gets +1/+1 until end of turn.

Equipped creature gets +2/+2 and can't block. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)