Just imagine discarding your hand to make a bunch of Clues to grow it, or making 4-6 Clues on turn 3 to enable casting it for just 1 mana
You may cast any number of the copies without paying their mana costs. In essence, whenever you cast a spell, you can cast more spells - and it snowballs
RED Mono-red decks can rejoice, because they just got a brand new toy with Solstice RevelationsSolstice Revelations
[14] In paper games, just say, Im going to decline to cast that or, I wont be playing that and put the card on the bottom of your library with the other cards you revealed
Abilities like double strike, unblockable, and toxic are all relevant, and power buffs can also help you aim for that commander damage win condition