Reading this asNewest sets first
Secret Lair x Horizon: Into the Forbidden West - Rainbow Foil Edition
SLD
Sealed
Secret Lair x Horizon: Into the Forbidden West - Non-Foil Edition
Kruphix, God of Horizons
SLD · 73
M
3 printings
Sprigatito - 012/193 (Pokemon Horizons Stamp)
MCAP · 012/193
Common
5 printings
LIST · 152
Scholar of New Horizons (Retro Frame)
SLD · 7143
R
Event Horizon (Black Lotus Unknown Planechase)
OVER
P
Horizon Boughs (Planechase Anthology)
S
2 printings
Horizon Boughs (Gateway Promo)
OVER · 43
Swamp (Horizontal Log) - 1998 Brian Selden (TMP)
WCD
978 printings
Swamp (Horizontal Log) - 1999 Jakub Slemr (TMP)
Seek the Horizon
LIST · 20
U
New Horizons
LIST · 198
C
7 printings
Horizon Scholar
LIST · 51/249
4 printings
Horizon Chaser (Hyperspace)
HMW · 499
Horizon Chaser (Hyperspace Foil)
HMW · 737
Horizon Chaser
HMW · 227/272
Seek Horizon (Red)
IAR · IAR236
Seek Horizon (Blue)
IAR · IAR238
Seek Horizon (Yellow)
IAR · IAR237
Landroval, Horizon Witness
HOC · 169
On the Horizon
TCGP-24525 · SEN018
TCGP-24524 · SIY017
New Horizon
SUP · SUP256
Legendary