what about a fed tf that just teleports next to a squishy mage and goldcard+rapes them?
even when between the front and second tower he just teleports and kills -.-
i agree that making pick a card random isnt going to work. but his gate should have a slight change, maybe it should take longer before he steps trough the gate (you can see the cardportal but it takes longer for him too show up)?
i found out that a perfectly timed gate is almost unavoidable without summoner spells (what if tf has got flash too? it would make your flash useless (except for avoiding a stun))
This is just wrong. If you begin running away from the incoming gate the moment it appears, you will be out of attack range by the time it finishes. As soon as the destiny icon appears above your head, start scanning your surroundings fro a gate appearance. Most people who get caught do so because they don't start thinking about escape until they naturally notice the gate(where the reaction time of one caught by surprise is vital lost time).
As for your squishie caster: if he's squishie enough to be bursted down from full in a stun and not competent enough to avoid the destiny gate, he simply shouldn't go off on his own late game when TF may have his ult off cd.