Jalira, Master Polymorphist

{2}{U}, {T}, Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

See Beyond

Draw two cards, then shuffle a card from your hand into your library.

Dream Cache

Draw three cards, then put two cards from your hand both on top of your library or both on the bottom of your library.

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Reef Worm

When Reef Worm dies, create a 3/3 blue Fish creature token with "When this creature dies, create a 6/6 blue Whale creature token with 'When this creature dies, create a 9/9 blue Kraken creature token.'"