For example, Traverse the Ulvenwald with no cards in your graveyard is just a one-mana way to grab a basic land
Ninjutsu 3BB (3BB, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Ink-Eyes, Servant of Oni deals combat damage to a player, you may put target creature card from that player's graveyard onto the battlefield under your control
It is a fistful of vampire-fighting garlic tossed at the vanilla base game
River of Tears is a changing land that changes the mana they produce based on if a land has been played this turn or not
What if the card represents more than one creature in the art
You cant hit a creature with it, which takes something away, but its still a good effect, especially for 2 mana