This can be good or bad depending on color combinations, but it is exactly what MTG has done over the years
Just imagine your opening hand for a game involving that deck
To support it without relying on it, I prioritized artifact mana acceleration like Thran Dynamo, Basalt Monolith, and all the artifact creatures I could get
As far as trainers or supporters go I would probably want to have some that let you retrieve energy cards from the discard pile if you plan on using Salamence for your main Pokemon, I wouldn't worry about potions or anything like that because 160 hp with 2 resistance types will be able to endure quite a lot of damage and last for many turns
However, World Shaper can still be a solid inclusion in decks looking to synergize with landfall triggers or graveyard strategies, making it worth considering for play in certain builds
The abilities that backup grants to the target creature are determined only once, at the time the ability triggers