pokemon cards arceus vstar 084/100 RRR cementing its place as a must The Cards Of Pokémon TCG:

Inventors Fair is a historic tutor in your mana base that also gains you some incidental life

More modern designs like Garth One-Eyed and O-Kagachi might be considered to fall in this category, but those legends have a little leeway to focus into other areas depending on how the deck is built and what definition you might consider for value

Casting opponents spells is one thing, but getting to pay life for the privilege, instead of mana

Now let's turn to my brew

Trial of Zeal: The effect is really good, especially because it has "or player," but the cost isn't so great

In a similar vein, the sets Headliner, the Raised Foil Avatar Aang, is already selling for truly eye-watering figures