[mwcard=MWSTX2FFQ05]Harshforge Plate[/mwcard] adds 2 mana to casting stuff
runes add 2 to cost of destroying stuff...
so casting dissolve on a Runed Harshforge Plate when you have [mwcard=MWSTX1CKE01]Armor Ward[/mwcard] costs
8+2 =10 mana to cast
If there is a nullify, the spell stops here
In the resolve spell step, it costs an additional 2+4=6 mana
so 16 mana total to disssolve a 9 mana chestpiece