chinese simplified booster box Pokemon with each pack including five cards Pokémon 151c Gathering (Slim) Simplified

Las Vegas has a thriving Pokmon competitive scene

Having a battlefield full of vigilant creatures let you swing out and attack without having to worry about blockers on your opponent's turn

Probably not outside of specific strategies or decks, and even then you are largely limited to using the Blue ones

N Normal Speedroid Wing Synchron X WIND Level 5 [ MachinePendulumTunerEffect ] ATK 1500 DEF 1000 P Scale 4 Once per turn: You can destroy this card and 1 Level 2 WIND Pendulum Monster Card in your Pendulum Zone, and if you do, Special Summon 1 "Clear Wing Synchro Dragon" from your Extra Deck (this is treated as a Synchro Summon), also for the rest of this turn, cards in your Pendulum Zones cannot be destroyed by card effects, and you cannot Special Summon, except WIND monsters

The key is to load the deck up with incremental life gain rather than single huge life gain effects since Blech's ability triggers once whenever you gain life and doesn't care how much life is gained