Then, it has a disguise ability, which costs X plus three generic and one white mana to flip up
Embercleave You knew this was coming
Instead, it's the fact that it allows the player to draw two cards when an equipped creature dies that pushes it over the top The potential card advantage is unreasonable for a single mana investment, especially since the -1 to Toughness makes it extremely easy for the player to kill their own creatures on command
Braska's Final Aeon runs along the same lines and is a very proactive card that threatens to beat any opponent that can't stand up to it
If their mana is already being held down by Stasis, and then you drop a Tabernacle in to play, it is unlikely theyll be able to pay for their creatures for long, turning Tabernacle in to a free Wrath of God, which sticks around on the battlefield
The last way opponents might counter your madness cards is by stopping you from casting them in the first place