My suggested change would be for Shard of Focus to come into play as a 0/45 with Gravity Pull and then lose 15 Health any time it destroys a permanent. This would allow the card to be destroyed or at least limited in number of uses by an all out attack of some kind.
Sounds decent, but if the player decides to use SoF to solely control damage, 45 health for just 4 is quite cheap..
That is true. Maybe it should have 30 health and lose 10 each time. That way, it would be a 1 cheaper Armagio that doesn't give you the choice of when to activate Gravity Pull.
When I first read this I agreed with it, but now I think about it more - this would mean for all deck with creatures (which is most) the card would have 10hp and so 1 chance to damage permanents gone instantly. In most cases 20 damage could be done over the two turns (Played + first permanent destroyed) it takes to cast it a second time. This means it would most commonly be limited to 1 and if your lucky 2 uses. On the other hand - high damage decks would crush it in 1 turn.
Conversely - at least it would be a means of damage absorption even if its other functions were destroyed.
It really changes the whole use of the card.
is set up for momentum style creatures that deal consistent damage through shields and creature control through otyugh. The soft creature control of the SoF is strong, but giving gravity decks the ability to absorb even more damage (with armagio) could make it OP.
6x Armagio = +150hp
6x SoF = +180hp
means a player has 430hp essentially. This is even more than the lengendary stone skin typically boosts
decks.
Consider if you had 2 saffire chargers (10dmg) and your opponent had a high damage output of 30dmg / turn. If you just played 1 of either Armagio or SoF each turn you would deal 100damg in 10 turns. They would deal 20-30 damage over the same time period.