It can help in professional printing contexts, but the basics (correct size, correct resolution, no downsampling) matter more
From a gameplay standpoint, Nightmare Moon is a little underwhelming
Given that the most meta of decks in Pokemon TCG Pocket right now consist of Water-types such as Lapras ex and Starmie ex, its in your best interest to try and build an Electric-deck to counter them all
The first is some kind of impossibly try-hard Omnath, Locus of Creation plus General Ferrous Rokiric brew in Modern, which sounds unplayable to me right now
Benevolent Bodyguards protection doesnt require mana to activate, and it also doesnt require it to not be summoning-sick (or have haste)
What really limits this is that it is essentially a sorcery Smother and does nothing to help you against bigger threats