The 10 borderless shock lands are available in non-foil and traditional foil exclusively in Collector Boosters
Theres also a battle pass, with the main reward being an additional pack per day, bringing the total to three
However, the fact that the summons are going to die in a couple of turns anyway makes me think this is more likely to be just a strong sideboard card
Also, dont know if differences are random
Use Wonder Pick System : This feature displays a list of card packs that players have recently opened, allowing you to randomly obtain one of five cards from the pack
If you dont cast it, put it into your hand. Basically, as long as you use instant speed spells, you can constantly generate value by drawing cards or casting stuff for free, and thats really very hard to beat when youre also messing up everyone elses fun at the same time