Source 1

TDIL-JP053 Super Hippo Carnival
Quick-Play Spell Card
(1) Special Summon 1 “Performapal Hip Hippo” from your hand, Deck or Graveyard, then you can Special Summon as many “Hippo Tokens” (Beast-Type/EARTH/Level 1/ATK 0/DEF 0) as possible, but these Tokens cannot be Tributed. You cannot Special Summon monsters from the Extra Deck while a “Hippo Token” is in a Monster Zone. For the rest of this turn after this card resolves, if a “Hippo Token” was Special Summoned by this effect, your opponent cannot target monsters for attacks, except “Hippo Tokens”.

Source 2