Sure ill play it for 5-mana! Not to mention the card also double counters on one of your creatures twice after already doing that powerful effect, making this card extremely high value
Thanks for reading until now
(2017-07-14) Solemnity stops counters from being put on an artifact, creature, enchantment, or land as it enters the battlefield, as well as stopping counters from being put on them later
Be sure to also check out our Alchemy overview and FAQ, the State of the Game announcement that dives into more Alchemy details, and the Alchemy Rebalancing Philosophy article
The fact that you have to wait a turn, attack with it, wait another turn, and then untap it (or combine it with something) and pay two to get anything done will keep this from the big boy tables
Plus, its decently statted as a 3/5 flier for just 4 mana