If a permanent enters the battlefield under an opponent's control with hexproof, indestructible, protection, shroud, and/or ward after Shay Cormac's first ability resolves, it won't lose that ability until you activate Shay Cormac's first ability again
I guess, whenever a creature enters the battlefield under my control, I can put a token card somewhere and reveal it and then I can put the converted mana cost which is zero on the token
Hildibrand Manderville would have been a really interesting card to see in the main set, at least mechanically
Regardless of what cards were added in the flex slots, the deck won by playing out a massive number of creatures, attacking with them, and then sacrificing them to drain out their opponents with [card]Blood Artist[/card] triggers, amass an army of flying demons courtesy of [card]Skirsdag High Priest[/card], or just create a giant [card]Voice of Resurgence[/card] token to bash their opponent to death with
Since players like equipping Skullclamp to X/1 creatures, having "anthem" effects like Elvish Archdruid may actually create a non-bo, or a contradicting combo
Bonny Pall is a big hitter that draws cards, plays or reanimates land for free, and drops a huge blue ox that gets stronger and stronger right onto the battlefield into the bargain