Overall, this deck has the most potential for upgrading it into a versatile and powerful combo deck
While metalcraft is a legitimate downside, there are plenty of cheap artifacts to enable this card
Don't ask where he got a strainer in medieval times
There are also creature-lands like Lair of the Hydra that have an activated ability that animates them into creatures, and some planeswalkers, including Gideon-type walkers like Gideon, Ally of Zendikar and Kaito, Bane of Nightmares, that have activated abilities or triggered abilities that let them become creatures
Narfi, Betrayer King reminds me of the Draugr of Skyrim, since its a lord for your snow and zombie creatures
These are the types of instant spells I'm going to be talking about this theme week, and not just in any fashion