Thanks to HeroWarsGuide for Data-mining this info!
What's in the Ninja Turtles Festival Shop?
Slot % Cost Currency Reward Name
1 100 1 undefined 1 Hero Soul Stone Chest
2 100 1 undefined 700 Chaos Particle
3 100 1 undefined 20 Large Skin Stone Chest
4 100 1 undefined 50 Outland Coin
6 100 1 undefined 15 Bottled Energy
8 100 1 undefined 20 Chaos Core
9 100 1 undefined 6 Pet Soul Chest
10 100 1 undefined 250 Wish Crystal
11 100 1 undefined 150 Wish Insignia
12 100 1 undefined 1 Staff of Morana's Nimbus
13 100 1 undefined 1 Archangel's Mace
14 100 1 undefined 1 Angel's Mace
15 100 1 undefined 1 Staff of Selena's Halo
16 100 2 undefined 1 Creator's Feathering
17 100 2 undefined 1 Blued Plate Armor
18 100 2 undefined 1 Alucard's Amulet
19 100 3 undefined 1 Unity of Extremes
20 100 3 undefined 1 Ruler's Globus
21 100 3 undefined 1 Song of the Valkyries
22 100 2 undefined 1 Blade of the Immortals
23 100 2 undefined 1 Citadel Guardian
24 100 2 undefined 1 Riversar's Tiara
25 100 4 undefined 1 Manhole Cover
26 100 5 undefined 1 Dual Ninjatos
27 100 5 undefined 1 Bo Staff
28 100 5 undefined 1 Dual Sai
29 100 5 undefined 1 Dual Nunchaku
30 100 5 undefined 1 Master's Black Belt