Even in You Make the Card , we removed that ability and said the players would get to vote on the missing one if the card text won
You can only use each effect of "Cyber Jormungardr" once per turn
While this ensures that each player is regularly attacking, whenever a creature attacks you or a Planeswalker you control, a +1/+1 counter is put on Thantis, allowing it to become a major threat if you continue to be targeted by opponents
If these cards are to be printed, then that's great, but just put them in the decks and maybe make a couple more per set if needed
Survivor cards tend to be very cheap, with their true potential brought out by combining them with other cards
Because this is castable twice, this amazing in Spellslinger builds along Guttersnipe or in brews with discard triggers like Rakdos madness to cast or in recursion brews or flashback brews and so many places