Strelitzia, True Dandelion

Reach
When Strelitzia, True Dandelion enters the battlefield, put a +1/+1 counter on all other Keyblade Guardians you control.

Whenever a Keyblade Guardian enters the battlefield under your control, Strelitzia, True Dandelion gets a +1/+1 counter.

"Only the Dandelions will survive. That means everyone else will disappear."