Before I explain what those groups are, let me show, for those who never played Magic before, how its card layout usually looks like: If I were to teach Magic to a new player, that is the essencial information I would make sure they had understood
For the second mode, the Incubator token is chosen as Sunder the Gateway resolves
About setting up engines that outperform what everyone else is doing at the table
All round Aether Vial is a big win
While mana intensive, the ability to repeatedly refute an opponent's turn by bouncing their guy combined with the ability to use Disappear as a way to "protect" your creatures in combat (cast Disappear on it and then attack freely, knowing you can save it from lethal damage) made for a very potent enchantment that acted more as a sorcery than an enchantment
He can also choose himself when you just need that 1 damage to survive a turn