pokemon majestic dawn booster pack Diamond & Pearl: 4 Majestic Dawn Booster Pack

Lets open it up and see what we get

Instead of merely, making the creature sacrifice itself to counter a spell, we used the same trick we used on Ravenous Baloth and Wall of Mulch

Considering that you'll get one of these cards in about one in every four boxes, this means that the Invocations add about $11 in value to the expected value of a box of Amonkhet , bringing the total box EV up from $77 to $88, which is approximately $10 a box less than either set from Kaladesh block and way less than high-EV sets like Khans of Tarkir or Battle for Zendikar

It comes in with X counters and hits that many nonland permanents until it leaves the battlefield itself

Implementing this into Arenas user interface would require major overhauls