Not yet, but soon available: send cards to to add 1.3x their DEC burn value as upvote credits, covering that value towards author rewards.
Whenever you make a new post or comment, you'll get an upvote at the 15 minute mark as long as it's value is above dust threshold (~$0.02). That value will be subtracted from your credits.
If doesn't have enough steem power, it will save your credits and gradually upvote you until your credits are depleted.
Check out https://steemmonsters.club's other upcoming features: