When you finish your Main phase, play goes to the End phase, which acts as a clean up step for end of turn effects and the like
Some of those items are bought with gems, some with gold, and a few are limited-time rewards for events, usually free events
III Other creatures you control get +2/+2 and gain trample until end of turn
While the Pokmon Trading Card Game is no longer built around the idea of slowly taking one prize at a time, these cards are still crucial to the game's balance and many of these cards are among the game's best and most generic staples
Youthful Knight is a 2/1 with first strike, so if it was blocked by Alpine Watchdog, Youthful Knight would deal its two damage first, destroying the Alpine Watchdog before the Youthful Knight would take damage