Sitting at the stepper end of this list, the deep-sea diving Blastoise is definitely an expensive number to look out for, as per the marketplace, but its also got an engaging depth of field in the design and a powerful Twin Cannons action
Make no mistake, in Blood Sun, Wizards has made a bold statement with an elegant hate card to punish the quietly overpowered fetchlands, and a new set of in-game and metagame calculations will now come into being for every multicolored, fetchland-heavy deck in Modern and Legacy

Cadira, Caller of the Small + Doubling Season + Trostani, Selesnya's Voice Infinite ETB, infinite lifegain, infinite lifegain triggers, infinite LTB, infinite sacrifice triggers, infinite death triggers, infinite creature tokens, infinite storm count Archfiend of Depravity + Archfiend of Despair Infinite sacrifice triggers for opponent's creatures over turns, Infinite amplified life loss for opponents over turns, Opponents lose the game Archfiend of Depravity + Archfiend of Despair (Denial Lock) Recurring board wipe for opponents, recurring life loss for opponents, severe board control, opponents cannot gain life Knight-Errant of Eos's Deep Search & Board Fill Put up to four creature cards from the top of your library into your hand, enabling a powerful board presence or assembling a non-infinite combo
Getting to steal your opponents mana could potentially lead to a huge ramp burst, especially with three opponents to work with
In the metagame right now, we have Seismitoad-EX (FFI 20/111) and it's one of the most dominant Pokemon in the format