The List

Keldon Champion

Haste
Echo {2}{R}{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 Keldon Champion enters, it deals 3 damage to target player or planeswalker.

Eternal Masters

Haste
Echo {2}{R}{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 Keldon Champion enters the battlefield, it deals 3 damage to target player.

Premium Deck Series: Fire and Lightning

Planechase

Urza's Destiny

Echo; haste (This creature may attack and oc
T the turn it comes under your control.)
When Keldon Champion comes into play, it deals 3 damage to target player.