Kinetic Alex

Upon casting this spell, each opponent may discard one card. Apply the following effect depending on number of discards:
• 0 players: Target player gains invulnerability until the start of their next upkeep.
• 1+ players: Target player takes 3 damage per discarded card, then gain invulnerability during the turns of the players that did not discard.
(Invulnerability: Target cannot be targeted or take damage from any source)

Equipped with his trademark shirt and buckets of tism', this go