During that time there have been some insanely powerful cards that needed to be banned from competitive play
I assume so
If that card is in that damaged players hand, you get to tutor up any creature with flying---Consecrated Sphinx, Sunblast Angel, or even Isperia, Supreme Judge
Does anyone know why this is
While a 5/5 indestructible beater sounds like a reasonable threat at first glance, considering that Historic will likely heavily feature Teferi, Hero of Dominaria, Teferi, Time Raveler, and Oko, Thief of Crownsall of which incidentally answer a 5/5 indestructible Darksteel ReactorI'm not sure the plan will actually be competitive
Goldspan Dragon, A dragon which produces treasure, whenever it attacks or is targeted by a spell, and also doubles the value of your treasure tokens