Yissona, Worldbound

Haste, doube Strike, trample, scarring 2
When you cast Yissona, Worldbound. You lose
10 life unless you have Salamander, the Fire
Spirit summoned.
When Yissona, Worldbound enters the
battlefield. All sources you control deal triple
damage until end of turn.
-Power overwhelming If total power of creatures
you control is 20 or more, sources you control
deal octuple damage instead.