Brionac, Dragon of the Ice Barrier (DT01-EN031) - Duel Terminal 1 Limited Number_LC5D-EN134 Card TextThere can only be

Card TextThere can only be 1 face-up Earthbound Immortal monster on the Field

(This card was officially reprinted as an errata

you can Special Summon 1 "Hydrogeddon" from your Deck

Card Text"""Barrel Dragon"" + ""Blowback Dragon""

Card Text1 Tuner + 1 or more non-Tuner Psychic-Type monsters // Once per turn

Brionac, Dragon of the Ice Barrier (DT01-EN031) - Duel Terminal 1 Limited Number_LC5D-EN134 Card TextThere can only beTypeSea Serpent Synchro Effect Monster AttributeWATER Level Rank6 ATK DEF2300 1400 Card Text1 Tuner + 1 or more non Tuner monsters Discard any number of cards. Then return the same number of cards from the field to the hand.