In addition to the base cost of the spell, three different tiers are available to select with different additional mana costs
Just remember that even if you run a proper 5-color deck, you optimally won't fit more than a handful of rainbow lands in it having every land be a 5-color land would ramp up the associated drawbacks far more than your mana, so choose wisely
If youre already familiar with Lorcanas basic mechanics, youll know that you can only use a maximum of two different Ink colors in your deck, and each card is colored with one type of Ink (Amber, Amethyst, Emerald, Ruby, Sapphire or Steel)
Overload (You may cast this spell for its overload cost
It certainly doesn't feel fair when the green player at your table drops several lands in a row, and that's when a card like Land Tax comes into its own
I would change the Steam Roller package to focus more on Thassas Oracle based win-conditions