Glowrider

Taxing the spellbook from a 2/1 is a strange place to put a stax effect, because the small white creature is exactly the part that loses if you misplace it. Sphere of Resistance had already shown the symmetry-breaking tax as a control tool, but stapling it to an aggressive white body reframes who pays: the deck running this wants few noncreature spells to begin with, so it feels the tax least and welcomes the beats most. That is the design logic. A creature-heavy curve barely notices an extra colorless on the occasional removal spell, while a control or combo opponent watching every counterspell, sweeper, and ritual climb by a mana feels it on every turn. The creature is not the threat; it is the delivery mechanism, the thing that makes the tax stick to the battlefield where it can be answered only at a cost its own effect has already made more expensive. The lineage runs forward from here: Thalia, Guardian of Thraben does the same job with first strike and a sturdier frame, and the comparison is unkind, but the structural idea (white hatebear plus broad noncreature tax) is the one Thalia inherited. This is an early, fragile version of an archetype white has refined many times since: small creatures that make the other deck's gameplan cost more to execute than yours does.