You can also play into an aristocrats strategy, where you sacrifice your own creatures for your benefit, using your Humans as a resource to drain your opponents' life totals without even going to the combat step
1 Multicolor, artifact, or common or uncommon land
The value of X is calculated only once, as Sally Pride's first ability resolves
Allies, in particular, love to look out for one another, and they have a lot of group buffs
It might look like a fun little flavour mechanic, but its the secret sauce here
With [mtg_card]Dawnbreak Reclaimer[/mtg_card], do you give your opponent a good creature, in the hopes they return the favor