Kazami Yuuka, Flower Youkai

Kazami Yuuka, Flower Youkai can only be the
target of spells and abilities during combat.
For every plant that dies, Kazami Yuuka gets
+2/+2, trample, and hexproof until end of turn.
If this creature dealt combat damage to a player,
you may pay {x}. If you do, that player discards
half of their hand at random, where if X is an
even number, round down. If X is odd, round up.
X cannot be 0.