Board Thread:Plants vs. Zombies Heroes/@comment-24471175-20161013220228/@comment-29611741-20170521024009

I can answer the first riddle... with cheesing :P

Lane 3 has a Force Field Environment. Zombies can play pretty much anything other than a Planetary Gladiator(that's what he's called now...), a Disco-Tron 3000, an Exploding Imp, a Sumo/Rodeo Garg, or a Hunt Zombie. Plants play a Soul Patch. Soul Patch takes al the hits with the invincibilty, and Brainstorm blocks said Soul Patch's punch(you didn't specify the block meter).

The second riddle is easy though:

Plants play a Puff-shroom on one of the Mushroom Grottos. They summon a Puff-shroom on another Grotto, but it gets sucked into the Black Holes. The Grottos still activate, which does this cycle three more times to fill up the Black Hole lanes. After that, the Puff-shrooms land on the other Grottos and fill them up with Puff-shrooms too.