Vani Tealeaf

Sneak Attack- Whenever Vani attacks, roll a d20.
1-14| Vani attacks as normal.
15-19| She gets +1/+0 and gains deathtouch until end of turn.
20| She gets +3/+0 and gains first strike and deathtouch until end of turn.
{r/w}{u/r}{w/u}{t} Storm Avatar State -- Put 6 +3/+2 tokens on Vani. Take one off every turn at the start of your turn starting next turn. While she has atleast one of these tokens, she cannot take damage from anything with "lightning" or "thunder" in its name.