Since the previous card reveals in February, and since the set is due to come out next month, there has been a significant amount of interest and even positive buzz around this release
There are other variants agreeing with this idea including Invoked , Nemesis and so much more
Anytime you tap down an untapped creature one of your opponents control, you can pay one mana
Thanks to all the card-draw this 'mon gives you, you can easily use Earthen Vessel and Superior Energy Retrieval to stack your hand with energy cards and blast through other more powerful 'mons before they're ready to fight
However, this option requires more caution: only buy from sellers with verifiable references, use PayPal Goods & Services never friends and family, and meet with caution
If you have a sacrifice outlet like Wall of Mulch, you can convert your Walls into extra mana on the spot