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There is no limit to the number of Synchro Summons you can perform in a turn

SR Super Rare Dragonmaid Welcome X SPELL Continuous All monsters you control gain 100 ATK/DEF for each "Dragonmaid" monster you control

With that in mind, ensure you sequence your cards correctly, lining up the big spell you really want to copy the turn after dropping this

Whenever you cast a historic spell, return target creature card with mana value 3 or less from your graveyard to the battlefield. You can basically make sure you use a lot of the sacrificial Artifacts time and time again by doing this, and it can be nearly impossible to beat with very little effort