Tick Tock, The Doom Clock

Event
1- (Each player) draws a card.
2-3- Puts a +1/+1 counter on a creature
they control.
4- Proliferates.
5- Gains 10 life.
6- Discards 3 cards.
7- Loses all the +1/+1 counters they control.
8- Mills 40.
9- Sacrifices 6 creatures.
10- Takes 29 Damage.