Sören, Saw it All

Haste, Partner with Lisi, The Showstarter.

When Sören enters, tap all creatures your opponents control.
{t}: Put a stun counter on each creature target opponent controls.
If there are creatures with stun counters on them, Sören gets +18/+0 and first strike.

"His double-taps are omnipresent. Never to be revealed
how."
—#Franconian Tale