Boom

Upgrade Path

Bang
⟶
Boom
⟶
Explodet

Combines to

MegaMagic
=
Blaze
↓
Blazemore
↓
Blazemost
+
Firebal
↓
Firebane
↓
Firebolt
+
Bang
↓
Boom
↓
Explodet
+
Infernos
↓
Infermore
↓
Infermost
+
IceBolt
↓
SnowStorm
↓
Blizzard
BigBang
=
Bang
↓
Boom
↓
Explodet
+
FireAir
↓
BlazeAir
↓
Scorching
↓
WhiteFire
+
FrigidAir
↓
IceAir
↓
IceStorm
↓
WhiteAir