Of the two starters, its probably the winner but requires a bit more planning and thought for the best result
Equip Spells Similar to Continuous Spells, but must be activated by targeting a Monster, in which case it is said that it is equipped to that Monster
While they are worse than Nature's Claim, when youre down to one mana, having limited removal in hand beats having none and if your Natures Claim is already in your graveyard, they probably wont see these coming
Main Deck 40 Gagaga Head X DARK Level 6 [ Spellcaster / Effect ] ATK 2100 DEF 2000 If only your opponent controls a monster, you can Normal Summon this card without Tributing as a Level 4 monster
In the case of Urza, having him along with The Mightstone and Weakstone in play costs 8 mana total, not to mention the additional 7 mana to activate Urzas melding ability