Since most Synchro Monsters are high-level, it can be difficult to Synchro Summon Synchro Monsters that require other Synchro Monsters as material such as "Shooting Quasar Dragon". This card can make their Summoning much easier.
Any Synchro Monster that requires 3 or more Synchro materials like "Archfiend Zombie Skull" can be summoned more easily with this card's help.
Use this card for any purpose you would use "Star Blast" on a monster on the field that doesn't require the target monster to be reduced to a level higher than 3. This would avoid paying high scores of life points.
You can also use this card to make other Synchro monsters into lower levels, allowing for an easier summon of "Shooting Quasar Dragon". An interesting tactic is to summon "Stardust Dragon", then use "Falling Current" to make either it or "Life Stream Dragon" into a Level 2 monster, and synchro summon for "Shooting Star Dragon".
If you have two monsters with the same Type and Attribute, you can first use this card on one of them and then use "Resonance Device" on the other to make for an easier Xyz Summon of a lower Rank Xyz Monster.
"Junk Warrior" can gain ATK from any Monster with the help of this card.