Considering the new Silverquill Precon and Killian, Decisive Mentor use a nearly identical strategy to Eriette, its no wonder demand is up
Whereas its younger sibling only has the most recent MTG sets (despite recent releases that expand the back catalog for Historic formats) Magic Online has cards that date as far back as 1996
$0.39 Rift Bolt Time Spiral $0.49 Skullcrack Gatecrash $2.79 Roiling Vortex Zendikar Rising $2.29 Lightning Bolt 2011 Core Set $2.49 Lightning Bolt 2010 Core Set $0.79 Exquisite Firecraft Magic Origins $0.35 Skewer the Critics Ravnica Allegiance $1.79 Lava Spike Champions of Kamigawa $0.79 Monastery Swiftspear Khans of Tarkir $1.99 Goblin Bushwhacker Zendikar $3.49 Fireblast Visions $0.35 Searing Blood Born of the Gods 0 results found
Other popular decks on ladder were the tried-and-true Amber/Steel "Steelsongs" deck and the Amethyst/Ruby Control pairing
He wants hasty or flash creatures, who are dying, and artifacts that produce mana, ideally for spells that take the most advantage of split second
If you're finding the English cards too expensive, consider picking up the Japanese versions