This is bad
Sunspine Lynx only stops damage from being prevented by effects that specifically use the word "prevent." Protection prevents damage, so protection will be unable to prevent damage while Sunspine Lynx is on the battlefield
When a TCG runs for long enough, even cards that were balanced upon release might become broken thanks to how newer cards interact with them, ultimately leading to the original versions being removed from allowed tournament play
If you do, create a token that's a copy of that creature
It is vulnerable when first deployed but your whole deck fits that bill somewhat
A standard Lorcana booster pack typically contains 12 cards + 1 puzzle/art/marketing card , arranged as follows: 6 Common cards 3 Uncommon cards 2 cards from the Rare, Super Rare, or Legendary tiers (non-foil) 1 Foil card - can be any rarity (Common through Enchanted) 1 Puzzle/Art/Marketing card (non-playable insert) In other words, each booster pack guarantees 12 playable cards: 6C, 3U, 2R/SR/L, plus 1 guaranteed foil