It's possible for a card to be banned in Modern that's unbanned in Standard, though that doesn't describe any cards right now
Fortunately, there are ways to draw out the support of our lands and mana more quickly, often referred to as mana ramp
It helps to place newly played cards slightly lower in the play zone than existing cards to show they cannot take these actions
But the main reason that dredge is so powerful lies in the ability to recur these cards as often as you need
Though "Brohunder", "Pahunder", "Mahunder", and "Sishunder" lack "Thunder" in their English names, the Japanese description of the effect of "Otonari Thunder" makes it clearer that it is referencing an archetype and not Thunder monsters in general.
Heres everything you need to know about buying Magic: The Gatherings Final Fantasy set now that its not the latest one released