In the initial announcement, Randy Buehler said that Coldsnap was designed around the same time as Ice Age and Alliances but was never released because "internal politics" had "forced" Wizards to release Homelands instead
While the previous Atraxa was definitely a nightmare, Atraxa, Grand Unifier is on another level
The Swarmweaver simply requires delirium to become an anthem and provide deathtouch to all your spiders, and Swarmyard Massacre can be a one-sided board wipe if you have enough qualifying creatures
Chart shows the price of Water Energy [Holo] #154 at the end of each month going back as long as we have tracked the item.
In the case of penguins, this option is more likely to be performed, either by way of Sardine, or via One for One with either Deep Sea Artisan or my most recent favorite, Crystal Girl, both of which can improve your card advantage, offsetting the natural minus one you incur from 1-4-1