Why Have All the Plants I Summoned Taken Human Form?

The moment Zhang Xuan opened his eyes, he had transmigrated to a parallel Earth under invasion from another world. He was randomly assigned a basic class: Plants vs. Zombies player. He was about to enter a dungeon for his first trial, but all he could summon was a Sunflower.

At the crucial moment, Zhang Xuan discovered that although his class was basic, transmigration had caused it to mutate. The plants he summoned had all taken human form! They also possessed S-rank talents and potential, while his own abilities and stats were the sum of theirs!

And so...

"The Bewitching Mushroom Girl, whose every smile and frown charms all living things."

"The Sunflower Girl, who can make a star explode with one hand."

"The Chomper Girl, who devours all things like a black hole, and more..."

They amazed the world.

And when the powerful beings from other planes finally managed to break through their defenses,

they were left despairing as Zhang Xuan extinguished the river of stars with one hand!