Stormchaser's Talent is one such Class: If it exits and then returns to play, you'll get a second 1/1 blue Otter token, and if it gained a level before being exiled it will be reset, and you'll be able to use the second ability to fetch an instant or sorcery from your graveyard a second time
And if you don't do it, the Infernal Denizen gives that effect to the enemy
There are plenty of quality cards that synergize well with Herald of Secret Streams, and you dont have to work hard to have creatures with +1/+1 counters in this format
Not so fast! you say
Corrupt Corrupts a simple payoff for being mono-black (or running Urborg, Tomb of Yawgmoth) that often ends games
Newer titles have moved away from the paradigm of the heroes of light collecting the scattered crystals in favor of broader, more convoluted plot-lines, but most games in the series still have a crystalline element somewhere