It normally costs twelve mana to activate it, but the cost is reduced by one generic mana for each creature with power four or more your opponents control
My recommendations will be based on the USA, but Ill also touch on the Canadian side of things a bit at the end
Use self-mill engines like Chronic Flooding and Perpetual Timepiece to accelerate your access to resources
Skyshroud Claim 4 mana is a steep asking price when it comes to mana ramp, but Skyshroud Claim still makes the cut in many of my Commander decks
How To Use Raid Raid rewards you for attacking, and the simplest way to use it is to just attack before playing most raid cards
As mentioned in the introductory post to the Sun & Moon series, the box ratios are assumed to be 3.0 regular Pokmon-GX, 0.8 full art Pokmon, 1.6 full art Trainers/secret rares and 3.0 Prism Stars