Never provokes the instant comparison to Ruinous Path, and even though Never will most likely see about the same amount of play as its predecessor, thats still enough to place it here on the list
When the planeswalker symbol is rolled, the planar controller puts the active plane or phenomenon card at the bottom of his or her planar deck
There aren't any major rules that are unique to Artifacts, but many cards care about the number of Artifacts you control, or can only target Artifact permanents
We dont need all Merfolk, but we do need some
Ensure you have enough creatures for Phyrexian Arena to shine, or spells to trigger an Underworld Dreams effect
The companion mechanic makes it so you always have access to the powerful value-oriented cat