If you must relegate Abaddon to the 99 of a deck (and let's be honest here who could relegate Abaddon the Despoiler of all the beings existing in Warhammer 40,000 to the 99?!), we think the only real choice is Yidris, Maelstrom Wielder
For just 1 mana, you can lock an opponent out of casting spells for a turn, and with kicker, it even prevents attacks
Creature Elder Dragon Flying Whenever this creature deals combat damage to a player, roll a d20
Choosing enchantments that build momentum keeps your Commander deck consistent, especially against removal or the grind of late game
Valiant is an ability word that appears on many Mouse creatures and highlights abilities that trigger whenever one of those creatures becomes the target of a spell or ability you control for the first time in a turn
Pilot Masters-level strategies with four different deck options, all featuring new face commanders