Here are some level 128 spell suggestions, and a card that ice wizards will get at the end of Marleybone.
Level 128
Prejudice Enemy takes 150 damage over time for 5 rounds, every time the target uses an attacking spell, the damage over time doubles.
Level 128
Griffon 10+65 damage per pip + remove one shield and charm every 3 pips
Level 128
Name: ??? 975 damage to all enemies, 500 to all allies
These are 3 spell ideas I came up with, but here is an idea for ice wizards that finish marleybone
Spell: Deep Freeze
Effect: Stun self for 1 turn, stun enemies for 2 turns
This spell is received at the end of marleybone. Ice wizards who are past marleybone before this spell is released will get a chat bubble on the side of their screen from sherlock bones telling the ice wizard to come to the museum. When you get there, Sherlock will say
"Looks like you forgot to pick something up when you left. Thanks again for saving marleybone" and then you recieve the spell.