The avalanche those artifacts and a few of their companions unleashed was so powerful that not only did several cards have to be banned, the power level had to be reworked and the game took over a year to readjust
Raichu's other move is called Thunder and this move does 60 damage for 4 energy cards, 3 electric and 1 colorless, and you have to flip a coin with this move as well, but this time if you get a tails you have to do 30 damage to Raichu
Honestly, even if we just see this card as two-mana for Lightshield Array and an opponent gains 3-5 life, thats still more than playable
Its nothing fancy, but Mono-Blue Tempo taught me to fear cards like this long ago
Many of which support well enough such that new archetypes have arisen based on the power and consistency these new green tools offer
Rancor and Honor of the Pure both pump creatures, but their permanence takes them outside the definition of pump spells