Effects increasing or decreasing the cost apply to alternative cost (as much as possible, of course)
This basically allows you to turn everything on your board into mana, and Ashnods Altar is a key part of any kind of deck that likes killing off its own Creature for profit
If people are curious, I can also do a dedicated comparison post showing light reflection, edge behavior, and thickness side-by-side Hope this helps :) Note: as an Amazon Associate, I earn from qualifying purchases
Brainstorm and other cantrips and card draw spells are very common in our format, so I expect this card to do good work in Leviathan
25, the Pokmon TCG Mega Evolution Booster Bundle is $49.99 at Amazon, down from $59.99, which is also market value when compared to listings at TCGplayer
A goblin pirate for the low cost of two mana, Dockside Extortionist is among the most efficient Treasure producer in the game, capable of creating an impressive number of Treasure tokens for a negligible amount of mana