Blightbelly Rat also proliferates when it dies, adding yet another poison counter
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
three or more specifically and rewards you with three mana in any combination of colors if the card you reveal from his first ability has three or more colors in its mana cost
What this series aims for is not to build the "strongest deck." It is to build a deck that lets you enjoy Commander casually with your favorite commander
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
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