Midnight Clock As noted in the Honorable Mentions, we've left some very popular mana rocks out of this ranking on grounds of them being cantrips rather than providing card advantage
Both halves matter against a deck like Dimir, but the fact that one half will matter against most decks means this is likely maindeckable
This card is no Mutavault, but its a strong addition to mono-colored (or 2-color) typal decks
RRCC Combustion Blast 130 This Pokmon can't use Combustion Blast during your next turn
You can use the Keg to kill a four or five mana card for two mana given time, but that's all you can do
You can add cards like Panharmonicon to decks filled with ETB abilities, such as blink commanders, and you can have cards like Yarok, the Desecrated as a Panharmonicon commander