Discard effects are predominantly black cards and most often sorceries (or abilities that can only be activated at sorcery speed) so that you cant make your opponents discard cards in their draw step
Or, if you can content yourself with four exiled cards each go, you can bounce it to your hand with cards like Crystal Shard
(This token's mana cost is .) Creature Token - Wizard Otter Color tag templates(None) Cragflame Equipped creature gets +1/+1 and has vigilance, trample, and haste
The efficiency here is amazing, and his ability to remove creatures and/or weaken or augment them makes him a bomb
[c]Blue-Red Delver[/c] is named after [c]Delver of Secrets[/c], a super cheap yet effective creature that can whittle away at your opponents life total over the course of a game
For one thing, having to check both a banlist and a Game Changers list when building a deck, knowing both could potentially change in the future, makes Commander feel like less of a casual format