Young Forest Drake

Flying. (Can only be attacked by flying creatures.)

Blue Dragon

Only play if color Blue is Open. Flying. When created: Draw 2 cards.

Young Sea Drake

Flying. (Can only be attacked by flying creatures.)

Infernor

Flying, Shield 1. Whenever a Gold or Red creature you control deals combat damage: Gain 1 life + Deal 1 damage to each opponent.

Aurion Ironspark

Flying, Pacifist, Shield 1. When created: ALL opponent’s creatures and buildings take 1 damage for each Silver or Gold Card in play you control.

Brightflame Dragon

Flying, Indestructible. When created: Once per turn, trigger on creation effect of ALL buildings in play you control.