There are many cards which have an errant apostophe in HPs. It is Hit Points, not Hit Point's, so it should be HPs, not HP's. Think also CDs short for Compact Discs, not Compact Disc's.
Cards include:
Gravity Shield
Otyugh (which would also be better grammatically if it read "fewer HPs" rather than "less HPs")
Heal
Guardian Angel
Holy Light
Drain Life
And I presume the upgraded versions need correcting as well.
Also, Fractal
It should be "quanta are consumed" not "quanta is consumed".
Finally, lightning. Not wrong, just inconsistent with the phrasing used in most of the other cards. "Deals 5 damage" should be the active "Deal 5 damage". Compare parallel uni: "summon...", not "summons"; or steal: "Steal a permanent", not "steals"