Kaylo, the Rat lord Jester

At the beginning of your upkeep roll a d20
1| You lose half your life rounded up
2-13| Take half that number rounded down and create that many 1/1 rat clown creature tokens
14-19| Put one giggle counter on target creature.
(creatures with giggle counters can't attack you or planeswalker)
20| All creature tokens you control gain First Strike, Deathtouch,Lifelink until end of turn