Additionally you can summon "Junk Servant" before Synchro Summoning to tribute it to deal 1500 damage.
Use this effect multiple times to dump many "Junk" Monsters into the graveyard. Then, summon "Junk Blader" and remove all the "Junk" Monsters to boost its attack
"Junk Giant" is a great card to use with this, as it is extremely easy to summon as long as there is at least one Level 5 or higher monster on your opponents field, allowing you to deal a solid 2000 Life Points of damage. This is amazing considering the rather costless nature of Giant's effect.
"Junk Berserker" makes a good tribute for this card as not only does it have high ATK but you can use "Wicked Rebirth" to bring him back for a total of 5400 damage.