SSD got an upgraded form, so why not Red Nova?

[.Nu-13]

[color="#C0C0C0"]|Red Neutron Dragon|
|DARK|Dragon•Synchro•Effect|Level 12|
|ATK|4500|DEF|4000|
|1 or more Tuners + 1 Dragon-Type Synchro Monster|
|If one of the Synchro Material Monsters for this card would be "Red Nova Dragon", you can treat its Level as any amount for this Syncho Summon. This card gains 1000 ATK for each Synchro Material Monster used to Synchro Summon this card and 500 ATK for each Tuner Monster in your Graveyard. You can reduce this card's ATK by any multiply of 1000. If you do, during this turn, this card can attack once for each 100 ATK it lost. This card is unaffected by your opponent's Spell and Trap Cards. If this card is destroyed, you can Special Summon 1 "Red Nova Dragon" from your Graveyard. (This Special Summon is treated as a Synchro Summmon.)|[/color]