For example, if you cast The Goose Mother for X=4, itll have a mana value of 6 on the stack, but a mana value of 2 on the battlefield
With your Commander out, it can do both at once, resulting in legendary, game-winning blowouts
The only issue, assuming you don't consider costing ten mana an issue, is that resolving four cascades in a row can get complicated, especially when individual cascades hit other cascade spells mid-resolution
As your first main phase begins (immediately after your draw step), you put another lore counter on each Saga you control
The first flies and can block a bunch
If you roll a die for any other reason (to simulate a coin flip, to choose pizza toppings, to create alternate timelines), that roll doesn't count