Legality depends on the tournament format -- Murkfiend Liege can be legal in some formats and banned or restricted in others
However, all is not well in this set for two reasons, both of which involve the trickster of the MTG universe: Tibalt
They also have dedicated land support with Haven of the Spirit Dragon, Crucible of the Spirit Dragon, and Temple of the Dragon Queen, making it easy to support a 5-color dragon deck
Between rounds in your group of eight players, you can freely swap as many cards you want between your main deck and your sideboard
Its melee ability grants Tifa a buff for each opponent you attack in a turn, and her second ability allows you to take a second combat phase if an attacking creature you control has seven or more power
Elvish Archdruid Elvish Archdruid combines the lord bonus with the mana production you see in cards like Priest of Titania, which makes this card an auto-include in most elf decks