After dropping one of these cards, it's an easy thing to Harsh Sustenance someone for a lot of damage (or a creature if you prefer), and you can kill someone out of nowhere
I wouldnt worry too much about the 1-toughness unless youre facing a deck that generates pings like a production line
and the powerful Disney Lorcana card Captain Hook: Forceful Duelist
Of course, returning it to your hand would be better, but its still additional value on an already pretty solid card
10 Shanid, Sleepers' Scourge Legendary Cantrips While Shanid, Sleepers Scourge has less power than many other legendary-matters commanders, that doesnt mean that the Human Knight isnt a fun design space to build around
Green is also exceptional at creating an immense mana advantage, typically with cheap cards like mana dorks (Llanowar Elves, Badgermole Cub) and land-based ramp, which is pretty unique to green (Rampant Growth, Cultivate)