Mei

Every turn, this card gains 1 {e}
When this card is summoned, search your library
for 'Snowball'. Put it on the field
{4}{u}{u} Mei and 2 allied creatures cannot be
attacked this turn. This can be used every 2 turns
{1}{u}{u}{u}{u} Mei cannot do anything this turn and
gains +0/+1 for 2 turns
{e} X 7 4 target creatures cannot attack for X turns,
where X is {u} paid divided by 2