@Kolimanien a chimera takes the stats of any other creature on the field when it comes into play. If you parallel a chimera, that's another chimera getting put into play. What is actually happening instead of one chimera getting destroyed, is your chimera is absorbing your other chimera. This causes no change in stats.
@LokiGodOfFire Skull Shield's chance of converting an attacker depends on their health. A creature with a low hp (1-3) has a lot higher chance to get killed than a creature with a high HP.
And in conjunction with both of these statements, it's hard to make a new card. You have to get suggestions from other people, see what other people think, nerf/buff it, and if it's still good, do the coding, and this takes a great amount of time. Patience is a virtue.
@dylanuu it makes the projectiles bigger, so bloons can't slip through tacks and @naruto10150 you can just use upgrades that destroy lead bloons or explosives.
It's an amazing game, but sadly not many people play it. I enjoy this game when people actually play it, it's fun, and it has all the right elements. 5/5 for me.