pokemon mewtwo black star promo card 14 PSA 7 Graded (Promo Series) [P] Energy Absorption Mewtwo 1995 Pokemon Promo Card

This is probably one of the better Elemental Incarnations to hard cast though

In tandem with cards like Monstrous Rage and the newly printed Might of the Meek, you can easily trigger Emberheart's valiant ability for extra draws while also benefitting from prowess

Like the tempting offer cards, its usually advantageous for your opponents to not interact with you when youre offering to join forces, but your mileage will vary based on how suggestable your friends are

Making it an MDFC gives it the utility necessary to become a white staple

It's also important that they are colorless so they can benefit from the mana ramp provided by Ultima