Shiaokuro, Elemental Avatar

All Splice onto Arcane abilities cost {1} less to use.
Whenever you cast a Spirit or Elemental spell, you may return target Arcane spell from your graveyard to your hand.
Whenever you cast an Arcane spell, put a ki counter on Shiaokuro. {2}: Remove two ki counters from Shiaokuro and if you do, add {w}{w}{u}{u}{b}{b}{r}{r}{g}{g} to your mana pool. You can only use this ability of Shiaokuro once each turn.