mtg card guide Karmic - Urza's Legacy #11 (English) How to Play | Magic:

16 Toxrill, The Corrosive A Serious Threat With Little Escape Printed in Innistrad: Crimson Vow alongside Umbris, while Toxrill, the Corrosive may cost a hefty seven mana, once cast it is capable of single-handedly taking over a Commander game

The payoff does seem to be there though

But the latter of these was a surprisingly big hit with the group, with many players paying as much attention to the tokens I brought as to the actual cards in their decks

Graft is representative of the Simic's newest life form, cytoplasts, which increase the intelligence and power of its host.% 26nbsp

Tezzeret the Seeker Tezzeret the Seeker might as well cost no mana with Sol Ring and Gilded Lotus