Vex

When you or an ally hold, you may exhaust me to draw 1.

While I'm in combat, friendly spells cost 1 less to a minimum of 1, and enemy spells cost 1 more.

[Shield] (+1 while I'm a defender.)
[Tank] (I must be assigned combat damage first.)
When you [Stun] an enemy unit at a battlefield, you may move me to that battlefield.

[Deflect] (Opponents must pay to choose me with a spell or ability.)
When an opponent plays a unit while I'm at a battlefield, [Stun] it. They can't move it this turn. (It doesn't deal combat damage this turn.)

If you play me to a battlefield, I enter ready.
[Action][>] 1, : [Stun] an enemy unit attacking here. (It doesn't deal combat damage this turn.)