Yusei Wins
4/4 Illustrated by Dai-XT Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Legal Comp
It certainly seems to be enough demand to keep Rhystic Studys price high as a card originally-printed-at-common
Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Thantis, the Warweaver
Some upgrades at your price point to consider: Esper Sentinel, Mystic Remora Diabolic Intent, Fabricate Skullclamp (in the precon), Baleful Strix (in the precon) Ornithopter of Paradise, Signets and Liquimetal (in the precon) The Reality Chip + Sensei's Divining Top combo Spellskite, Skrelv, Defector Mite, Ethersworn Canonist Skrelv's Hive Counterspell, Swords to Plowshares (in the precon) Good luck with your deck
As part of his Occult deck, Dark Bakura uses the Destiny Board trap card