Floodchaser enters the battlefield with six +1/+1 counters on it.
Floodchaser can't attack unless defending player controls an Island.
, Remove a +1/+1 counter from Floodchaser: Target land becomes an Island until end of turn.

Prevent all damage that would be dealt to creatures this turn.

Haste
Goblin spells and Rogue spells you cast cost less to cast.

Changeling (This card is every creature type.)
Trample

Whenever you cast a Druid spell, you may draw a card.
Tap seven untapped Druids you control: Gain control of all lands target player controls.

When target creature dies this turn, return that card to the battlefield under its owner's control.

Other Archer creatures you control get +1/+1.
Whenever an Archer you control deals damage to a creature, that Archer deals that much damage to that creature's controller.

Whenever Grimoire Thief becomes tapped, exile the top three cards of target opponent's library face down.
You may look at cards exiled with Grimoire Thief.
, Sacrifice Grimoire Thief: Turn all cards exiled with Grimoire Thief face up. Counter all spells with those names.

Tap three untapped Elves you control: Add .

Enchant land
Enchanted land has ": Target creature can't block this turn."

Create three 1/1 green Elf Warrior creature tokens.
Reinforce 3— (, Discard this card: Put three +1/+1 counters on target creature.)

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle your library.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Ink Dissolver, you may reveal it. If you do, each opponent mills three cards.

Flash
Flying
Whenever you cast a Wizard spell, you may untap Inspired Sprite.
: Draw a card, then discard a card.

Target creature gets +1/+0 and gains first strike until end of turn.

Kinsbaile Borderguard enters the battlefield with a +1/+1 counter on it for each other Kithkin you control.
When Kinsbaile Borderguard dies, create a 1/1 white Kithkin Soldier creature token for each counter on it.

Knight creatures you control have double strike.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Kithkin Zephyrnaut, you may reveal it. If you do, Kithkin Zephyrnaut gets +2/+2 and gains flying and vigilance until end of turn.

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.)
Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles their library.