cardfight vanguard ultimate stride booster box G - BT13 - or collecting featured units from the release Ultimate Stride Booster Pack -

Metalfoes Combination and Metalfoes Counter are Metalfoes Traps that could be searched out too, and they provide additional Special Summon to quickly build the board, or search for a Metalfoes monster

Ready for my top five

Designer Notes: The Ur-Dragon is a great way to play all your dragons early by reducing their cost, while also helping you draw cards and finish out the game once you get to 9 mana

Heritage of the Chalice X SPELL Add 1 "Noble Knight" monster or 1 "Noble Arms" card from your Deck or GY to your hand

So while I can advocate devoting more cards in the deck to mana production, its impossible to devote more slots to each of the other elements as well

It's also sort of a looming threat, and kind of dangerous in that sense but even so, super neat card