Once you reach the phase of the game where you can afford to do multiple things per turn, you need card draw to ensure you keep having things to do (Circle of Power, Fight On!, Travel the Overworld) or at least cards which can be used multiple times (flashback spells, Ring of the Lucii, Shambling Cieth, Relentless X-ATM092)
It resolves even if the spell is countered
So far, 21 Disney Lorcana starter decks have been released, each with their own play styles and ink combinations
Some of these selfishly bought cards get immediately flipped for profit due to the scarcity the buyers create, but many are kept sealed - a supposed investment for the future
Rather, it merges with the target creature and becomes one object represented by more than one card or token (see rule 730, Merging with Permanents)