While Pathways aren't as helpful as a true dual starting the next turn, having that power for the turn you play it can make a big difference
For that cost, you gain control of X Creatures and Planeswalkers
Case in point: Toxrill, the Corrosive, one of the most annoying top-end cards ever
Share can be a handy tool for decks that are sensitive to losing energy when one of its Pokmon is knocked out, like decks without energy acceleration options or decks that are especially reliant on manually attaching a single Basic Energy card each turn
Relic of Progenitus has been one of the premium answers to some strategies: Its cheap, and can play a grindy game removing one card per turn, or one-shot-exiling both graveyards at the right time
Colfenor, the Last Yew Much like his companion Doran, Colfenor cares about big toughness