Choose one —
• Draw three cards.
• Return up to two target creatures to their owners' hands.

Draw three cards, then discard a card.
If it's not an extra turn and you've amped it up twice this turn, take an extra turn after this one.
Exile Real Virtuality.

Choose one or both —
• Return target creature to its owner's hand.
• Return a creature with the greatest power or tied for the greatest power to its owner's hand.

Choose one —
• Draw two cards.
• Put a +1/+1 counter on target creature, scry 1, then draw a card.

Whenever Recurring Visions enters or you cast a spell which had its flashback cost paid, surveil 3.

Counter target spell unless its controller pays {2}. Look at its controller's hand and the top card of their library.

Counter target spell with mana value X. If that spell is targeting you or a creature you control, you may choose new targets for it instead.

When Research Grant enters, look at the top three cards of your library. Put one into your hand and the rest into your graveyard.
You've cast two or more spells this turn.
You've drawn two or more cards this turn.

Counter target spell. Untap up to four lands.

Draw a card. If you've amped it up this turn, creatures your opponents control get -1/-0 until end of turn.

Tap target creature. It can't become untapped for as long as you control a creature named Tidewake Walker.

Surface {2}{B}{G}{U}. Riverbed Snapper surfaces transformed.

Runway Mech enters with a +1/+1 counter on it.

Draw three cards, then discard a card. If you controlled a white permanent as you cast this spell, tap up to one target nonland permanent.

Flash
When Sanctum of the Two Truths enters, draw two cards.
Spellcharge 4

Scry 2, then draw a card.
Flashback {4}{U}

Scuttle Tank enters with a defender counter on it.

Surface {U}. Scuttling Cicada surfaces transformed.

When Sea Breeze enters, return up to one target creature to its owner's hand, then surveil 1.

Look at the top two cards of your library. Put one into your hand and the other into your graveyard.
Surface {2}{U}

Whenever a land you control enters, scry 1. If that land is a Ruin, scry 2 instead.

When Shaman of Rime's Fury enters, create a 0/0 colorless Spirit creature token. Put a number of +1/+1 counters on that token equal to the total number of instant and/or sorcery cards you own in exile and in your graveyard.

Defender
Shoreline Crasher gets +2/+0 and can attack as though it didn't have defender as long as it is enchanted.

Untap up to X permanents you control during each other player's untap step, where X is the number of Shrines you control.

Target creature gets +2/+0 until end of turn and can't be blocked this turn.