If you aren't the starting player, you may cast Shove Aside as though it had flash.
Shove Aside deals 3 damage to target creature or planeswalker.

Whenever Snarlfang Vermin deals combat damage to a creature, if that creature is still on the battlefield, suspect that creature. It perpetually gains this ability.
Whenever a suspected creature an opponent controls dies while Snarlfang Vermin is in your graveyard, that opponent loses 1 life.

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. It perpetually becomes a Clue artifact in addition to its other types and gains ", Sacrifice this permanent: Draw a card."

When this Case enters, it deals 1 damage to any target.
Damage isn't removed from creatures during cleanup steps.
To solve — Three or more creatures are damaged.
Solved — Whenever you attack with one or more creatures, this Case deals that much damage divided as you choose among any number of targets.

Thopters you control get +2/+0.
At the beginning of your upkeep, conjure a card named Ornithopter into your hand.

When Scrutiny of the Guildpact enters, you may choose a creature card in your hand. If you do, that card perpetually incorporates and gains "When you cast this spell, create a 2/2 white and blue Detective creature token."
Multicolored creatures you control get +1/+1.

Choose an instant or sorcery card in your hand or graveyard. That card perpetually incorporates and gains "When you cast this spell, draw a card." Then return a multicolored instant or sorcery card from your graveyard to your hand.

When Scour the Scene enters, create a 2/2 white and blue Detective creature token.
Whenever you sacrifice an artifact, choose a creature card in your hand or a creature you control. It perpetually gets +1/+0.

Trample
When Concert Kaboomist enters or is turned face up, it deals X damage to target opponent, where X is the number of noncreature spells you've cast since the beginning of your last turn.
Disguise

When Lurking Spinecrawler enters, you may choose a nonland card in your hand. If you do, that card perpetually incorporates and gains "When you cast this spell, each opponent sacrifices a creature. Each opponent who can't discards a card."
Whenever you cast a multicolored spell, for each of that spell's colors, each opponent loses 1 life and you gain 1 life.