Some of them are virtually free, like Manamorphose, Gitaxian Probe, or the 0-mana mana rocks, which in turn synergize very well not only with Song of Creation, but with the deck as a whole
You can exile the top card of the damaged player's library and cast it with your red or colorless mana your Mono-Red Commander deck built around Grenzo can run
Of the three Esper zombies, its certainly the most flexible
I was mostly lucky enough to find a Demonic Tutor from someone who knew its value but was happy to let it go for quite a bit cheaper just to find a buyer for it
Since Valley Floodcaller can come down at instant speed, there is a chance that players experiment with this, but losing your enabler to the Ultima might make this a bit too resource-intensive for control decks
HOLDS Up to 70 graded cards, 1500+ playing cards