While in 96, discarding a single card to Balduvian Horde could be devastating, Wild Mongrel and Psychatog converted cards into raw stats while enabling Madness and Threshold
A three drop and four drop respectively, Somberwald Sage and Rosheen Meanderer each can tap for large amounts of mana, though with some restrictions
But it gets a bit more complicated since it also affects your opponent's creatures while also taking those creatures into consideration
That makes sense because having a repeatable effect like this on a commander can be too powerful, but it also makes Vraan a less-than-exciting commander
This Bloomburrow bards a bird in addition to its other creature types, it flies, and it clones cheap creatures really well, while having synergies with X spells and ninjutsu you can bounce it back to your hand and copy another creature later
There are no conditions on that statement