Time Spiral Timeshifted

Echo 2G (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters or dies, put a +1/+1 counter on target creature.

This creature enters with a javelin counter on it. T, Remove a javelin counter from this creature: It deals 1 damage to any target.

2G, T, Discard two cards: All lands target player controls become 3/3 creatures until end of turn. They're still lands.

Other Kobold creatures you control get +1/+0.

At the beginning of your upkeep, sacrifice this creature unless you pay GG. Morph 7GG (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

Trample This creature enters tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap this creature. This creature can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)

Flying, vigilance, haste

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

T: Destroy target creature with islandwalk.

Merieke Ri Berit doesn't untap during your untap step. T: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated.

This creature enters with two +1/+1 counters on it. 1, Discard a card: Put a +1/+1 counter on this creature. Remove two +1/+1 counters from this creature: Draw a card.

Whenever you cast an instant or sorcery spell, you may pay 3. If you do, copy that spell. You may choose new targets for the copy.

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

Trample

Protection from black Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+3 and has flying.

Flash When this creature enters, counter target spell.

Flying At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay UBR. Whenever Nicol Bolas deals damage to an opponent, that player discards their hand.

R, T: Look at the top eight cards of your library. Exile four of them at random, then put the rest on top of your library in any order.

Trample This creature can't attack if defending player controls an untapped creature with power 3 or greater. This creature can't block creatures with power 3 or greater.

When this creature enters, sacrifice it unless you return three basic lands you control to their owner's hand. T, Return this creature to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.

T: Add G. T: Target 1/1 creature gets +1/+2 until end of turn.

This creature can't attack unless defending player controls an Island. T: This creature deals 1 damage to any target. When you control no Islands, sacrifice this creature.