Enigman Megacurrent

Burst-:When this unit is placed on , if your vanguard's is 15000 or greater, this unit gets +4000 until end of turn. If your vanguard's is 20000 or greater, choose one of your vanguards, and until end of turn, it gets ": 1 At the beginning of your attack step, you may pay the cost. If you do, this unit gets +4000 until end of turn.".