Thoon-Avus

Flying, Undying & Thwart {x} (Counter this spell. Any player may pay this, but they also have to reveal their hand and lose X life)
This enters the battlefield with X +1/+1
counters on it. You may pay {1} to remove
a +1/+1 counter to create a 1/1 Thoonavite Aberration token with {1} Ward. It also has
"If destroyed all players lose 1 life"