User blog comment:Vermillionaid/RWBYGO (A Rework)/@comment-4023909-20181001071616/@comment-25936766-20181002170946

Ok, so, you have never seen Yugioh, ever.

That's what I'm gathering from your comment, because since almost-literally forever you could normal summon without any sacrifices monsters from Lv1 to 4. It's from 5 onward that you need to sacrifice 1-2 monsters on your field.

Only exception would be in the very-original format, the very first one, where there were no effect monsters, you could try to fuse whatever cards you wanted, you could only place a single card of any type each turn, and any monster could be summoned without sacrifice, regardless of it's level or stats.