Historically, in Magic, two drop creatures are usually the most efficient. There’s a reason people play maindecked [scryfall]Spell Snare[/scryfall]s in Modern. Some examples: [scryfall]Snapcaster Mage[/scryfall], [scryfall]Tarmogoyf[/scryfall], [scryfall]Spirit of the Labyrinth[/scryfall], [scryfall]Meddling Mage[/scryfall], [scryfall]Putrid Leech[/scryfall], [scryfall]Scavenging Ooze[/scryfall], [scryfall]Pack Rat[/scryfall], [scryfall]Dark Confidant[/scryfall], [scryfall]Baleful Strix[/scryfall], [scryfall]Thalia, Guardian of Thraben[/scryfall], [scryfall]Arcbound Ravager[/scryfall], [scryfall]Quirion Dryad[/scryfall], [scryfall]Lord of Atlantis[/scryfall] and its ilk, [scryfall]Young Pyromancer[/scryfall], [scryfall]Precinct Captain[/scryfall] and so forth. This is only what I can come up with from the top of my head. Sure, there are creatures with other casting costs, which are definitely good, but two just seems to be the sweet spot.
What can we do with this information? Well, the title of this post says pretty much: if all our creatures are of the same casting cost, we can bring them all back with [scryfall]Immortal Servitude[/scryfall] and since we don’t want to go too high on the curve, two is a good spot to put all our creatures in. So, now the question is, what do we use here. Since I tend to go with monocolored decks, we can choose either white or black as our color. So, the first step is figuring out all the creatures we can use use in standard:
