User blog comment:TSRITW/If PvZ2 Plants were in Heroes/@comment-29637681-20180202014725

How about:

Hot Potato: A Frozen plant does two Bonus attacks(the first one thaws it, the second is the attack).

Blover: Destroy all zombies with 2 strength or less. Bounce all other zombies.

Bowling Bulb: The first time this does damage each turn, do 3 damage to a random zombie, and 5 to another.

Phat Beet: The first time each Root does damage, this gets 1 Strength.

Thyme Warp: Bounce all Zombies, and they cost 1 Brain more. For the rest of the game, this gets +1/+1 when anything is Bounced.

Tangle Kelp: Make it an Environment that says “End of Turn: Destroy all non-Amphibious Plants and Zombies here. All Amphibious plants get +1/+1.

Grimrose: End of turn: This does 2 damage to itself. Destroy a random zombie.

Otherwise, nice.