Whenever a creature attacks you or a planeswalker you control, investigate
Drawing cards is already a good effect on its own, but c ombine it with minimal cost and you get a card thats straight-up broken
Now go forth and collect with confidence.
(2023-11-03) If a spell's kicker cost was paid, the spell is "kicked." (2024-11-08) The kicker ability doesn't let you pay a kicker cost more than once
While the first decks, like Jason's above, made sure to diversify card types to make the Tarmogoyf huge, that trend quickly turned into a quite simple philosophy: "Just play Tarmogoyf in everything." While Jason's deck-building instincts of making his own cards powerful were generally right (and especially in Block Constructed), it turned out that a card that could consistently have 2-plus power on turn two and grow to be enormous in the late game was plenty good on its own
It's an annoying thing to lose to as it can win the game on just its cast alone