Crucible Knight

First Strike
Echo {1}{r}(At the beginning of your upkeep, if this
came under your control since the beginning of your
last upkeep, sacrifice it unless you pay its echo cost.)
When an opponent gains life, you may pay {1}{r}, if you do, put Crucible Knight from your
hand into the battlefield with a flying counter on
it and it deals 3 damage to that opponent.