mtg all pirate cards Prosperous Pirates create two Treasure tokens Building with Pirates | MAGIC:

You could compare this to drawing a black line on the back of a powerful card or one you know you need for your planned strategy

Opt you cast at your leisure and at the low cost of one mana it should barely ever be detrimental or even noticeable on your curve which is much more so the case with the slightly more potent sorcery alternatives that get in the way of things more

This a typical alternate-cost mechanic that usually lets you play cards for way cheaper

But as your deck begins to take shape, understanding the idea of a mana curve is really useful

Lords are less essential in soldiers as white has so many types of Crusade effect but there are quite a diverse selection ranging from two drops like Veteran Amorsmith and Auriok Steelshaper to high end one man armies like Captain of the Watch