Well I was thinking that pets can unlock more things that make the pet more epic. For example these pets if you get lucky..(Just random pets I picked) :D
Starfish at Epic: pedigree 67(10) May cast "Feint" May cast "Unicorn" May cast "Spritely" 11% resistance 6% Damage 2% Critical rating
Sea Dragon at epic: pedigree 78(16) May cast "Fire elf" May cast "Spritely" May cast "Smoke screen to all enemies" 5% Resistance 10% Damage 11 critical block
Jade oni at epic: pedigree 59(11) 13% Balance damage 9% resistance May cast "Traige" May cast "Dragon blade" May cast "Hex" May cast "Curse"
Chimera at epic: pedigree 69(10) 15% Resistance 6% damage May cast "Hex" May cast "Sprite" May cast "Balance blade" 13 critical rating
Efreet at epic: pedigree 72(13) May cast "Fire blade" May cast "Tower shield" 13% resistance 15% fire damage May cast "Sprite" 2% power pip chance
Gnome at epic: pedigree 63(7) May cast "Sprite" May cast "40% increase in life spell" May cast "Life blade" 4% resistance 6% life boost
Woolly Mammoth at epic: pedigree 61(10) May cast "Ice trap" May cast "Tower shield" May cast "Sprite" 11% Damage 8% power pip chance 3% accuracy
Siren at epic: pedigree 62(0) May cast "Super charge" May cast "Sprite" May cast "Storm blade" 6% resistance 3% damage 8% accuracy
Bone dragon at epic: pedigree 67(2) May cast "Death blade" May cast "Feint" May cast "Tower shield" May cast "Dragon blade" 13% damage
Basilisk at epic: pedigree 68(2) May cast "Myth blade" May cast "Peirce" May cast "Sprite" 15% myth resistance 3% damage May cast "Shatter"
Epic Dragon: pedigree 80(6) May cast "Tower shield" May cast "Curse" May cast "Hex" May cast "Sprite" Gives 1 spell: Fiery Dragon "Damage 350-400" Appearance: A small dragon appears in the center of the battle ring, becoming firey each time it takes a breath, it finally attacks by spinning around creating a Fire ball and shoots it at you. 7% damage. (Made up pets starting from sandzilla)
SandZilla at epic: Pedigree 79(23) Gives 1 spell: Sandstorm 18% accuracy May cast "Sprite" May cast "Balance blade" May cast "Tower shield" 5% power pip chance
Death angel at epic: pedigree 83(15) May cast "Sprite" Gives 1 spell: "Angel Sweeper" 400-475 Appearance: An angel Dressed in a black robe appears flying down with glowing black wings, Its face covered in a black Hood. A arrow in its hand as it flies down to you. It Opens its hands to the sky creating a beam of Mixed life and death light which then goes into the arrow. The arrow lands in front of you creating a electric shock of green and black.
Mythical Horse at epic: Pedigree 86(1) May cast "Sprite" May cast "Troll" May cast "Legion Shield" May cast "Unicorn" 6% accuracy Gives 1 spell "Heaven Death horse" 390-450 Appearance: A white horse with a yellow light barrier comes out of a Tree with gold apples. It then Turns black and a golden apple falls from the tree turning black, The unicorn bows the the apple, as it explodes leaving to powerful sparks which then hit you froming a death cloud above you.
Rainbow Cloud at epic: Pedigree 89(10) May cast "Dyrad" May cast "Sprite" May cast "feint" 12% damage 11% resistance Gives 1 card: "Misty Skies" 400 Life to one wizard Appearance: A bright blue sky appears with many clouds, the clouds suddenly move to the right and a bright rainbow colored cloud comes down. It then glows bright (Like regenerate) But instead casts a gold heart at you giving you 400 life and a 10% Life booster.