All Hounds are Dogs. (We'll errata this to be true.)
First strike, lifelink
Underdog — If you've lost a game this match, Ruff, Underdog Champ and other Dogs you control get +1/+1.

First strike
This creature gets -2/-2 as long as white is the most common color among all permanents or is tied for most common.

, : Exile target land you control, then return it to the battlefield under your control.

Flying, lifelink
At the beginning of your end step, if you descended this turn, scry 1.

When this creature enters, scry 1.

Alliance — Whenever another creature you control enters, scry 1. If this is the second time this ability has resolved this turn, draw a card instead.

Flying
: This creature gets +1/+1 until end of turn.

When this creature enters, you may search your library and/or graveyard for a Rune card, reveal it, and put it into your hand. If you search your library this way, shuffle.
You may pay rather than pay the mana cost for Rune spells you cast.

When you have 30 or more life, flip Rune-Tail.

Flash
Federation — When Saavik enters, she deals X damage to target attacking or blocking creature an opponent controls, where X is the number of creature types among non-Borg creatures you control.

Lifelink
Embalm

, Sacrifice this creature: Reveal cards from the top of your library until you reveal a white card. Put that card into your hand and exile all other cards revealed this way.

This creature can't be blocked by black and/or red creatures.

, : This creature gets +0/+2 until end of turn. ( is the untap symbol.)

When you cast this spell, if you've cast another spell this turn, copy this spell. (The copy becomes a token.)
Flying, lifelink

Flying
Morph

Lifelink
When Saint Elenda enters, conjure a card of your choice from Saint Elenda's spellbook into your hand. You may cast that card this turn without paying its mana cost.
At the beginning of your end step, if you gained life this turn, create an X/X white Avatar creature token, where X is the amount of life you gained this turn.

Saint Elenda's spellbook includes the following cards:
• Faith's Fetters
• Ritual of Rejuvenation
• Invoke the Divine
• Inspiring Cleric

When Sally Pride enters, create X 2/2 red Mutant creature tokens, where X is the number of nontoken creatures you control.
Whenever Sally Pride attacks, put a +1/+1 counter on each creature you control.

Affinity for creatures
When this creature enters, draw a card.

: Target creature gets -2/-0 until end of turn.

Whenever another creature enters, exile this creature. Return this creature to the battlefield under its owner's control at the beginning of the next end step.

, Sacrifice this creature: Return target artifact card from your graveyard to your hand.

Flash
Flying
Whenever this creature or another Bird you control enters, exile up to one target creature you control without flying. Return it to the battlefield under its owner's control with a flying counter on it at the beginning of the next end step.

, : Prevent the next 4 damage that would be dealt this turn to target creature you control. Tap that creature. It doesn't untap during your next untap step.

, Sacrifice this creature: Prevent the next 1 damage that would be dealt to each creature you control this turn.

: Creatures you control gain protection from the colors of target permanent you control until end of turn.

: Prevent the next 1 damage that would be dealt to any target this turn.

Whenever this creature becomes tapped, you gain 1 life and scry 1.