Platinum Soul of the Crusader

This enchantment becomes a creature
only during the combat phase.
During Combat, this card is a 4/4 Spirit Creature
with Double Strike.
After combat exile this card. During the
combat phase, before blockers or attacker are
declared, return it and attach it to Jotaro, The Stardust Crusader.
{r/w}{r/w}{r/w}{r/w}{r/w}{r/w}{r/w}{r/w}: An additional combat phase
occurs after this one. This card gains vigilance.