This five (usually) cost 4/4 will save your unspent mana as Black
One mana for three cards is basically what cements this cards dominance
This allows GW versions of the deck in particular not be reliant on Captain Sisay in the command zone to tutor for everything, which makes games a little more varied
They're allowed to then look through the entire pack, and pick one card from it (unless told otherwise, like in Commander Legends where you pick two instead)
On the one hand, its tempting to think of what youre promising as a minor thing
They are: Branchloft Pathway (Green) / Boulderloft Pathway (White) Brightclimb Pathway (White) / Grimbclimb Pathway (Black) Clearwater Pathway (Blue) / Murkwater Pathway (Black) Cragcrown Pathway (Red) / Timbercrown Pathway (Green) Needleverge Pathway (Red) / Pillarverge Pathway (White) Riverglide Pathway (Blue) / Lavaglide Pathway (Red) The reason there are six Pathways in the set, rather than the five or 10 that Wizards normally puts in a cycle, is to support the mana requirements for the Party classes