When the tenth +1/+1 counter is put on Shang-Chi, you draw five cards and gain 5 life
Nissa tends to be a lands-matter kind of Planeswalker, with most of her cards doing things like untapping lands (Genesis Mage, Sage Animist, Vital Force, Steward of Elements, and Worldwaker), animating them into creatures (Vital Force, Sage Animist, Shadowed Boughs, Steward of Elements), or giving you extra abilities whenever you play a land
It also causes one player to take a disproportionate amount of time in the game
And we Johnnies have Companions
Shelob allows you to tie them together by acting as the commander of your deck
And remember when in doubt, you should just attack