You can tap any creature you control to pay for Behold Some cards will ask you to behold something, usually a creature type
Reuniculus If Reuniclus wasnt a Psychic-type, it wouldnt be nearly as useful
According to WotC, there isnt one primary strategy that is employing The One Ring, as it helps prop up several varied strategies. The power-level of The One Ring will certainly be something to keep an eye on as Modern moves forward without Nadu, Winged Wisdom and Grief
Silverquill, the Disputant Aristocrat decks often fall under midrange
As a long-time Esper player, primarily in Standard, I've always focused on the Control strategies of Esper - building decks that seeked to slowly dismantle my opponents, only to eventually outpower them in terms of resources
The deck practically plays itself once it gets rolling: deal damage, cast spells, watch the board dissolve