For regular summon gates for heroes and pets, the probability breakdown is:
- 70% normal (2 shards)
- 15% lucky (3 shards)
- 12% super lucky (5 shards)
- 3% ultra lucky (10 shards)
Weighted average is 2.75 shards/gate
With the current set of available heroes, the chances of any particular Open or Restricted hero in a regular summon gate is
- 1/19 (if you have Jackbot unlocked)
- 1/18 (if you don’t have Jackbot)
or for pets
- 1/11 (if you have Woofie unlocked)
- 1/10 (if you don’t have Woofie)
In case of a Double Chance that can occur from special summons (for a hero or pet other than Jackbot or Woofie) then the chance for the featured hero would be 2/19 vs 1/19 for the remaining 18 heroes or 2/11 for the featured pet vs 1/11 odds for the other 10 pets, This is because in special summons, it replaces the spot for Jackbot or Woofie with another chance to get the other hero or pet.
With with special Summons for Premium pets and heroes (the ones that unlock at 60 shards) the chance for the featured hero would be 1/19 for heroes or 1/11 for pets, but all the other basic pets and heroes would have the same odds as the featured one.