I was vaguely aware of PTCGO as a person in gaming media, but I also never gave it much thought, assuming it was a shallow app for kids
I For each opponent, up to one target noncreature artifact they control becomes a 0/4 Wall artifact creature with defender for as long as you control this Saga
The other two mechanics are more niche, which is always fun for anyone who likes playing with them in MTG formats like Commander
Ivy, Gleeful Spellthief, Felix Five-Boots, The Thirteenth Doctor, Toski, Bearer of Secrets, and Tasha, the Witch Queen are all good options to copy with Spark Double, too
And that's just a few of the TMNT mutants
There are also Jurassic World cards and borderless cards in these boosters, which are very nice