If you already have a decent Modern collection and are looking to push some of your decks over the top, pick up your Horizon Canopies while they are on sale, but if you are just getting started in Modern, your limited Magic budget will be better spent on more important cards from Iconic Masters
Talrand, Sky Summoner Youd think Talrand, Sky Summoner is the best mono-blue commander with how often Wizards reprints it
Then, if you have a Prince or King in residence, you will pay one less lore to play a character
It costs the right amount of mana, and can potentially help a one-drop rich deck cheat on mana
Borderless triumphant cards can be found in both Play Boosters and Collector Boosters in non-foil and traditional foil
Or, you can get aggressive and producing a powerful individual threat like [card]Butcher of the Horde[/card]