Leviair the Sea Dragon - RA04-EN155 - 1st Edition - Quarter Century Secret Rare

3x Tenyi Spirit – Mula Adhara - SUDA-EN042 - 1st Edition - Ultra Rare

All 3 cards are already included in the Deck as Ultra Rares

or Blue-Eyes Ultimate Spirit Dragon

3x     Lord of the Tachyon Galaxy - MZTM-EN017 - 1st Edition - Rare

3x     Apophis the Serpent - MZTM-EN010 - 1st Edition - Ultra Rare

by Special Summoning itself from your hand

3x     Divine Golden Shadow Dragon Dragluxion - MZTM-EN014 - 1st Edition - Ultra Rare

3x     Z-Zillion Tank - MZTM-EN020 - 1st Edition - Rare

In addition to the full 50-card Deck

there’s a chance of that Secret Rare card upgrading to a Quarter Century Secret Rare

and adjusting the Level of any Tuner (even itself

This gives you maximum flexibility for whatever’s the best monster to Synchro Summon