Well, according to the official MTG rules, tournament-legal Magic: The Gathering cards should measure 2.5 x 3.5 inches, or 6.35 x 8.89cm, however if you're creating novelty cards then there's no need to stick to the rules
Of course, once you've powered up to use Trinity Burn, you also have enough Energy for the trios Sky Legends- GX attack, which hits three of your opponents Pokmon for 110 damage and then shuffles the TAG TEAM into your deck, preventing your opponent from getting a 3-Prize Knock Out
II Whenever one or more creatures you control with flying deal combat damage to a player this turn, look at that player's hand and draw a card
Mega Eelektross ex - Lightning - HP350 Stage 2 - Evolves from Eelektrik [L][L] Split Bomb: This attack does 60 damage to 2 of your opponent's Pokemon
Arasta of the Endless Web and Ishkanah, Grafwidow are excellent options to make even more spider tokens, as is Arachnogenesis for an absolute blowout when youre getting attacked
The more valuable the better