All three of these are undoubtedly fragile, and thats what holds them back the most from seeing play, but their activated abilities are incredibly strong
Enchantment Color tag templates(None) Trespasser's Curse Enchant player Whenever a creature enchanted player controls enters, that player loses 1 life and you gain 1 life
The original Primeape, which can be found in the Genetic Apex (A1) Charizard Pack, has 90 HP and has an attack that deals 40 to 100 damage
Palkia has a single attack that requires two Water-type energies and deals 20 damage
Cosmogoyf Tarmogoyf for exiled cards is an interesting concept, though the reward is still just a dumb vanilla creature
As the reminder text helpfully mentions, that exiled card is "imprinted" on Mirror Golem