mtg omen cards of the Sea Theros Beyond Death (THB) Common Magic #058/254 Unplayed the player puts it onto the battlefield Omen of the Sun -

Theres no maximum deck size, as long as you can shuffle your deck in your hands unassisted

MTG x Secret Lair - Dreaming Darkly Glen Elendra Archmage Guardian Project Roon of the Hidden Realm Soulherder The drop costs $29.99 for the regular version or $39.99 for the foil one

Standing in for the group will be the most game-breaking one of the bunch, especially if it were legendary, and my personal favorite: Soulfire Grand MasterSoulfire Grand Master

Keep experimenting and try out all kinds of other cool combos and plays, and you will restore the world from Ruin in no time.

It also hearkens back to the original one-mana legendary pup Isamaru, Hound of Konda, which may or may not be his ancestor