Flowering of the White Tree

Modern Boros Aggro is credible, but a WW anthem needs a dense legendary board and produces no immediate board presence.

Could be wrong if A proven white legendary-aggro shell could make its rate and ward clause materially better than expected.

Legacy's Boros Aggro presence offers a possible shell, but a WW board-dependent enchantment is slow and vulnerable to removal.

Could be wrong if A sufficiently legend-heavy low-curve aggro list could exploit the +2/+1 and ward package.

A cheap anthem that gives legendary creatures +2/+1 and ward 1 is a solid inclusion for creature-heavy legends strategies, but adds no cards or mana.

Could be wrong if Optimized lists may prefer card advantage, mana, or protection that covers the whole board.

Two mana for a universal +1/+1 anthem is premium; legends becoming +2/+1 with ward can dominate creature combat, though it needs a board.

Could be wrong if Legend density, removal, and format speed are unknown; a sparse or fast environment lowers its payoff.