21 cards where the text includes “your opening hand”

Chancellor of the Annex (New Phyrexia #6)
Chancellor of the Dross (New Phyrexia #54)
Chancellor of the Forge (New Phyrexia #81)
Chancellor of the Spires (New Phyrexia #31)
Chancellor of the Tangle (New Phyrexia #106)
Emissary's Ploy (Conspiracy: Take the Crown #4)
Gemstone Caverns (Time Spiral Remastered #280)
Leyline of Abundance (Core Set 2020 #179)
Leyline of Anticipation (Commander Legends: Battle for Baldur's Gate #726)
Leyline of Combustion (Core Set 2020 #148)
Leyline of Lifeforce (Guildpact #90)
Leyline of Lightning (Guildpact #68)
Leyline of Punishment (Magic 2011 #148)
Leyline of Sanctity (Core Set 2020 #26)
Leyline of Singularity (Guildpact #29)
Leyline of the Guildpact (Murders at Karlov Manor #217)
Leyline of the Meek (Guildpact #10)
Leyline of the Void (Core Set 2020 #107)
Leyline of Vitality (Magic 2011 #183)
Providence (Eldritch Moon #37)
Sphinx of Foresight (Ravnica Allegiance #55)

In the blink of an eye, they strode from deep snow to the end of this search.