Hopefully, you will get to use the ten mana to play the summons, or it will be a way to draw cards, which is also great
Islandcycling 1 (1, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)
Best Cards for Urza, Chief Artificer Decks Urzas main trick has always been its artifact synergies, but Chief Artificer Commander has several abilities that you may utilize to your advantage
With the right setup (something Hypnotic Deduction can help with) the combination of Robin Hood, Sneaky Sleuth and Robin's Bow will let you quest far ahead while simultaneously clearing off the damaged characters on your opponents board
Later in the game, once you have a larger number of lands out, you can sacrifice it to draw a card, helping you to stay in the game with hopefully a relevant card off the top of your deck
That often puts a stop to ramp strategies or +1/+1 counter strategies, and it invalidates casting expensive spells