Depending on the type, each set will normally have its own theme, either based around a particular fictional setting in the lore, or perhaps tailored to one particular mode of play, like the Commander or Modern formats
The question is whether there is room for it alongside competing options like Corpse Appraiser and Fable of the Mirror-Breaker
This is normal, the velocity of draw will help you find and resolve more, and it is possible to recur more as well
For example, you could use Vhati il-Dal to reduce a creature's toughness to 1, then use Thorn Thallid to eliminate it with ease
In Pokmon Trading Card Game Pocket, opening either the Genetic Apex Mewtwo, Pikachu, or Charizard booster packs freely will likely set you back on your way to building a full collection and a competitive deck as each one offers different cards and different early-game rewards
So removal or killing creatures in combat will net you Rat tokens