Tamlin Of The Spring Court

At the beginning of combat of your turn,
up to one target land you control becomes
an X/X Elemental creature with trample
And haste until the end of turn, where X is
Tamlins power. It is still a land
Landfall - whenever a land enters the
battlefield under your control put a +1/+1
counter on target creature.
(Never feel bad for doing something that
brings you joy)