They work especially well nowadays with Urza, Lord High Artificer and Urza's Saga, two cards you dont exactly want to make stronger
(An exerted creature wont untap during your next untap step.) Some refused to leave their shattered homes, vowing to rebuild at any cost
Bloomburrow itself is a very two-color centric format, with some slight splashing, so doing more gifting of treasure would have been hard to pull off in such an environment
This archetype is even more likely to spill into three, four, five colors than the one above, but it is extremely powerful for its diversity and has very nice payoffs
Sagas in Sigurd's colors that work especially well with this effect include Elspeth Conquers Death, Fable of the Mirror-Breaker, and There And Back Again
4 Showdown Of The Skalds While Showdown is another card that technically doesn't draw cards, like the previously mentioned Synthesizer it might as well