I like cards like this, especially in multicolour deck. Why? It's a type of mana filtering that you don't really see in many other cards as well as boosting the mana in your pool. It works great in multicolour decks. Let's say you're running a black/blue Zombie deck and you have 2 Islands and a Swamp. If you have a Geralf's Messenger in your hand, you can't play it since it costs 3 black, but it you play this first, you can pay it. It can add much needed mana of a different colour to your mana pool in various scenarios. However, the mana it adds might not be what you need when you need it. What if you needed the mana for an instant or ability on someone else's turn? There are flaws to cards like this, but there are a lot of benefits to playing this.
Pros: Pseudo-filters mana, increases mana in your pool Cons: Mana added doesn't last for too long, may not create mana when you need it. Rating: 2.5/5