That's pretty saucy from where I am standing, as free dork abuse in the Command Zone can be broken as we know, but here you need to spend six mana, tap it and wait a turn, and then you just don't know what you'll get, if anything, hence it making my second list back here in the Honorable Mentions, but worth it all up and down, and make that choo choo sound
It guarantees you wont be mana screwed, and you can thin out your deck so you are less likely to draw basic lands late game
As for decks this can slide into, I can see most decks playing red just wanting this
Hard to go far wrong with this great early game setup card that turns into a late game finishing move
In fact, we could have done this piece with only the multicolored cards and still had lots to talk about
A few of the Cyclers are mass pump spells