Prismatic Overnex

Permanents you control have hexproof{1}, trample, flying and first strike.
Creatures with the highest power among all permanents gain lifelink, and creatures with the lowest power among all permanents gain deathtouch.
Whenever a player casts a spell, flip a coin. If heads, counter that spell unless the player pays 1 life and exiles a card from their hand, library, graveyard, and battlefield.