Japanese imports at UK prices
Generally speaking, in decks that are three or more colors, you want to play almost all dual lands, along with enough basic lands to support whatever ramp is in your deck (Land Tax, Kodama's Reach, Rampant Growth, et al.)
This can lead to lost or ruined cards which defeats the entire purpose of buying a box in the first place
Still, it made a big impact and found itself to be a popular card for Commander and - surprisingly - Constructed formats, despite Platinum Angel not seeing play in those same formats
(Also, in addition to their main effects, every Ashtra Trap Card can be Summoned as a Tuner monster, giving you lots of strategic options!) Between the fiery rage of Ashtraja Susanoo and the cold precision of Ashtraya Mikumari-no-Mikoto, no card is safe from this themes Synchro Monsters