tcg card market pokemon First Partner Illustration Collection (Series 1) and ACE SPEC cards continue to shake up the game in the Pokémon TCG Pokemon - Trading Card Games

There are dozens of other cards that grant Flash in one form or another (Quicken is one of my favorites), but none have been as dramatically impactful as these two cards

At worst, they may be hit with exile-based removal spells, but there's only a limited number of those available

Canoptek Tomb SentinelCanoptek Tomb Sentinel can get in some decent damage, but thanks to vigilance and it's ability to exile a permanent if it enters from graveyard, it makes for a decent deterrent for attacks

What is the rarity of this Blaziken card

For a child starting for the first time: buy a starter or theme deck rather than booster packs