An Accelerator of Sorts

Attach ([Alpha Aster]): U

Engage: If this is attached, put target [Alpha symbol] or [Harbinger symbol] Clash card you control into your Resource Zone engaged. If you do, you may reveal an [Alpha symbol] or [Harbinger symbol] card from your hand with an initial resource cost less than or equal to the card put into your Resource Zone and put it into play with Observant until end of turn.