Ugin, Awoken

When Ugin, Awoken enters the battlefield, create X 1/1 Scion where X is the total converted mana cost used to cast Ugin, Awoken
+1: create a 1/1 Scion
-3: deal 3 damage to target Nicol Bolas planeswalker card
-X: create X 1/1 Scion cards