Herald of Rebirth (Yellow) [FAB033] (Promo) Rainbow Foil BT8-038 what is the "Zenkai Series"

what is the "Zenkai Series"

[Your Turn][Once Per Turn] When one of your blue Digimon becomes unsuspended

You cannot place a (soul core) on this spirit with this effect

3 Era: Universe Survival Saga Rarity: Super Rare Game character: Son Goku Color: Red Card type: Battle Power: 35000 Combo energy: 1 Combo power: 10000

[When Digivolving] Delete 1 of your opponent's Tamers

Herald of Rebirth (Yellow) [FAB033] (Promo) Rainbow Foil BT8-038 what is the "Zenkai Series"Set: Promo Finish: Rainbow Foil Type: Action Subtype: Attack Rarity: Promo Class: Illusionist Cost: 2 Power: 6 If Herald of Rebirth hits, put it into your hero's soul and put up to 1 card with phantasm from your graveyard on top of your deck. (Put this card face up under your hero card.) Phantasm (If Herald of Rebirth is defended by a non Illusionist attack action card with 6 or more [Power], destroy Herald of Rebirth and close the combat chain.)