Well, perhaps they agree that there is a point where a deck can have too many Pain Lands and Fetch Lands freeing up a few slots for Filter Lands and the strong mana fixing they provide at the cost of 0 life
I can see it making a return but as a result of increased information from cards like Courser of Kruphix and Gitaxian Probe combined with more decently playable creatures you quite want to sacrifice appearing in black
Its a cool card to play in decks that use proliferation, counters, and even tokens, considering that sometimes just placing a +1/+1 counter on everybody is worth a card
Shamanic Revelation Rather like Feed the Clan, Id want a plethora of ways to enable ferocious to play Shamanic Revelation, but its not as necessary this time around
One $5.99 listing for a Starmie ex, for example, asks buyers to ensure they have 500 Trade Tokens, one Trade Stamina, and most importantly, an "unwanted Pokmon ex" to exchange for the card they actually want